Plant Kingdom | Classification of Plants into Groups with Features | Plant Life Cycles | Questions for NEET, MBBS Entrance

Fully solved practice questions for NTA NEET, Medical Entrance Exams, MBBS Admission Tests and other competitive exams.
Diversity in The Living World
Topics (Syllabus): Plant Kingdom | Classification of Plants | Plant Life Cycles and Alternation of Generations 
Salient features, treatment of Plant Kingdom. Classification of plants into major groups - Algae, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms (three to five salient and distinguishing features and at least two examples of each category). Angiosperms - classification up to class, characteristic features and examples). Ulothrix and Spirogyra. Albugo. Mucor, Rhizopus and Yeast. Ricca and Funaria. Pteridium and Selaginella. Cycas and Pinus. Plant Life Cycles and Alternation of Generations. 

Biology Objective Questions : Practice Questions Answers

India Study Solution Test Series – Set 3 (Q. No.21 - 30)


Question 21: Sulphur shower is caused by
a. Release of pollens from Pinus male cones in conifer forest
b. Acid rains
c. Sulphur deposition
d. None of the above

Question 22: Rhizopore of Selaginella is –
a. Root
b. Stem
c. New organ or organ sui-generis
d. None of these

Question 23: Floridian starch is found in –
a. Chlorophyceae
b. Rhodophyceae
c. Cyanophyceae
d. Chrysophyceae

Question 24: Calyptra is formed from
a. Spore
b. Oospore
c. Venter
d. Archaegonium

Question 25: Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tend to be
a. Smaller and to have smaller sex organs
b. Smaller but to have larger sex organs
c. Larger but to have smaller sex organs
d. Larger and to have larger sex organs

Question 26: In Pinus, male cone bears a large number of
a. Microsporophylls
b. Ligules
c. Megasporophylls
d. Anthers

Question 27: In bryophytes
a. Both generations are independent
b. Gametophytes are dependent upon sporophytes
c. Sporophytes are always autotrophic
d. Sporophytes are dependent upon gametophytes

Question 28: Brown hair found at the base of Pteris leaves are
a. Modified stipules
b. Modified leaflets
c. Ramenta
d. Spines

Question 29: The smallest plant group gymnosperm has how many species?
a. 640    b. 300    c. 1000    d. 900

Question 30: In which gymnosperm, archegonia are absent
a. Gnetum
b. Welwischia
c. Both a and b
d. None of the above

India Study Solution
Diversity in the Living World - Plant Kingdom | Plants Classification Features
Solutions of ISS Test Series – Set 3 (Q.No.21 – 30)

Answer 21: (a).   Answer 22: (c).   Answer 23: (b).   Answer 24: (c).   Answer 25: (a).   Answer 26: (a).   Answer 27: (d).   Answer 28: (b).   Answer 29: (d).   Answer 30: (c).


Plant Kingdom | Classification of Plants into Groups with Features | Plant Life Cycles  - More Questions, Solved Test Series 


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EduNews: Bengal Joint Entrance Examination Board announced revised date for WBJEE-2019

 
Updated: 23-12-2018
West Bengal Joint Entrance Exam (WBJEE 2019) for admission to engineering and pharmacy colleges will be held on May 26, 2019.

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"Paper-I (math) will be held in the first half, from 11am to 1pm. Paper-II (physics & chemistry) will be held in the second half, from 2pm to 4pm," board chairman Malayendu Saha said. The results of WBJEE - 2019 are likely to be published on July 2.
WBJEE 2019 dates have been changed twice.

Saha had said the board was likely to hold the test on April 21, 2019, while releasing the results of this year's exam in May.
On December 12, the exam date was fixed on May 19, assuming the Lok Sabha polls and the results would be declared by then.
On Monday, the board said the dates would be revised because of the JEE (Advanced) on May 19.
This year, the exam was held on April 22 and the results were announced on May 23.
The board has announced that applications can be filed and fees paid online from December 26.
"The classes start on August 1. We will take steps to ensure the online counselling is held in a way that the session starts on time," board chairman Saha said.
The board holds several rounds of online counselling and students are admitted after each round.
This year, the online counselling began in the first week of June.
The board this year had held mock counselling across 33 centres to explain the concept of online counselling.
Now after this unusual delay in taking exam, some doubt is quite apparent if the WBJEE board will hold such mock counselling next year for WBJEE 2020.

Schedule for WBJEE - 2019

Date of Exam: 26th May 2019 (Sunday)
On-Line Registration: 26th Dec 2018 to 22nd Jan2019 (5 p.m.)
Registration through Website: www.wbjeeb.nic.in
For information bulletin of WBJEE-2019 and other details please visit the board website: www.wbjeeb.in / www.wbjeeb.nic.in

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EduNews: WBJEE 2019 date to change

 

West Bengal Joint Entrance Examination (WBJEE) board has decided to revise the examination date for WBJEE-2019. The JEE board will announce the new date soon. 
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The West Bengal Joint Entrance Exam board had initially announced to hold the entrance test (WBJEE 2019) for admission to engineering colleges and pharmacy institutes on 21st April 2019 next year. But an announcement uploaded on the board's website on December 12 said that the test would be held on 19th May 2019 instead.
The latest notice on the website declares that "the date of WBJEE-2019 examination will be reconsidered and the new date will be announced shortly". The JEE Advanced 2019 examination is scheduled for 19th May 2019.
"The new dates will be announced soon," JEE board chairman Malayendu Saha said on Monday.
Saha had, while announcing the results of the WBJEE 2018 in May, said WBJEE 2019 exam was likely be held on April 21 in 2019.
"We have tentatively fixed April 21, 2019, which is a Sunday," Saha had said.
Now the exam has been deferred to May 19, assuming that the general election results would be out by then as the five-year term of the Lok Sabha ends on May 19, an official said.
This year, the exam was held on April 22 and the results were announced on May 23.
Online application and payment of fees for WBJEE 2019 will begin on December 26. "The forms can be submitted online till 5pm on January 22, 2019. Corrections can be made online and a revised confirmation page downloaded from January 23 to January 25," JEE board chairman Saha said.
The downloadable admit cards were to be published on May 7, 2019.
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Periodic Classification of Elements and Periodicity in Properties | India Study Solution

Periodic Classification of Elements and Periodicity in Properties

Solved Questions Bank and MCQ Test Series – Set 4 (Q. No 31-40)

Fully solved practice questions (MCQ Test Series) for on Classification of Elements, Periodic Table and Periodicity in Properties for IIT JEE, NEET, Class 12 Board Exams and other competitions.

Chemistry Test Series: Periodic Classification of Elements and Periodicity in Properties

For previous and next questions click on the links below:
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India Study Solution Test Series – Set 4 (Q. No. 31-40)

Question 31: In which of the following compound Mn shows minimum radius?
a. MnO2    b. KMnO4    c. MnO   d. None of these

Question 32: The values of IE(I), IE(II), IE(III), and IE(IV), of an atom are respectively 7.5 eV, 25.6 eV, 48.6 eV and 170.6 eV. The electronic configuration of the atom will be:
a. 1s2, 2s2, 2p6, 3s1          b. 1s2, 2s2, 2p6, 3s2, 3p1
c. 1s2, 2s2, 2p6, 3s2, 3p3    d. 1s2, 2s2, 2p6, 3s2

Question 33: The total number of elements known are:
a. 92    b. 117    c. 100    d. 118

Question 34: With which of the following electronic configuration an atom has the lowest ionization enthalpy?
a. 1s2, 2s2, 2p3   b.1s2, 2s2, 2p5, 3s1
c. 1s2, 2s2, 2p6     d. 1s2, 2s2, 2p5

Question 35: The longest and shortest periods are
a. 1 & 6    b. 2 & 6    c. 6 & 1    d. 1 & 7

Question 36: Pick the incorrect statement about the factors affecting ionization energy
a. Half-filled or full-filled atomic orbitals have high ionization energy
b. More is the shielding of valence electrons more is the ionization energy
c. Larger is the atomic radii lower is ionization energy
d. Ionization enthalpy  effective nuclear charge

Question 37: Which of the following statements is INCORRECT?
a. Generally the radius trend and the ionization energy trend across a period are opposites
b. Metallic and covalent radii of potassium are 2.3 Å and 2.03 Å respectively
c. Amongst Li-, Be-, B- and C-, Li- is least stable ion
d. Atomic and ionic radii of Niobium and Tantalum are almost same

Question 38: Which of the following has largest radius?
a. O2-   b. Mg2+   c. Na+   d. F-

Question 39: Among the following Ca, Mg, P and Cl, the order of increasing atomic radii is
a. Mg < Ca < Cl < P   b. Cl < P < Mg < Ca
c. P < Cl < Ca < Mg   d. Ca < Mg < P < Cl

Question 40: The starting element of fifth period is
a. K   b. Rb   c. Kr   d. Xe

Periodic Classification of Elements and Periodicity in Properties
Hint & Solutions of Test Series Questions Set 4 (Q. No. 31 - 40)

Answer 31: (b) (Hint: IAs oxidation state of central metal ion increases, the electron to proton ratio decreases and therefore, size of ion decreases. In KMnO4, Mn is in + 7 O.S. So, due to maximum +ve charge radius will be lowest)
Answer 32: (b) Answer 33: (b) Answer 34: (b) Answer 35: (c) Answer 36: (b)
Answer 37: (c)
[Hint: a. Across the period, size decreases as electrons are added in the same shell and nuclear charge increases by one unit for addition of each successive element. In contrary, the ionization energy increases as size of atom decreases and nuclear charge increases. 
b. rmetallic > rcovalent (covalent bond formation involves the overlapping of orbitals). 
c. 3Li- - 1s2 2s2 completely filled stable configuration, so more stable. 4Be- - 1s2 2s2 2p1. 5B- - 1s2 2s2 2p2. 6C- - 1s2 2s2 2p3 half-filled stable configuration, so more stable.
d. Due to lanthanide contraction]
Answer 38: (a)  Answer 39: (b)  Answer 40: (b)

 Classification of Elements, Periodic Table - Practice Questions Bank | Test Series  

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Prepare Physics at Home | Solved Practice Questions, Test Series on Gravitation | NEET NTA | JEE Main

 

NEET NTA, JEE MAIN - Physics Preparation   
Gravitation
Physics solved MCQ test series and practice questions with answers from the chapter “Gravitation”. Prepare at home (Ghar Baithe Taiyari Kare) for NTA NEET, JEE Main, all national and state level engineering and medical entrance exams.

Gravitation (Topics / Syllabus)
Kepler’s laws of planetary motion. Laws of Gravitation - the universal law of gravitation. Acceleration due to gravity and its variation with altitude and depth. Gravitational Forces. Gravitational potential energy and Field; Escape velocity, orbital velocity of a satellite. Geostationary satellites. Motion of planets and satellites in circular orbits.

Physics Practice Questions: Gravitation
India Study Solution MCQ Test Series – Set 3 (Q. No. 21 - 30)

Question 21: If the change in the value of g at a height h above the surface of earth is the same as at a depth d below it (both h and d are much smaller than the radius of the earth), then:
a. d = h    b. d = 2h    c. d = h/2    d. d = h2

Question 22: The weight of a body will appear to be zero when
a. It is kept at the centre of the earth
b. It is freely falling
c. It is inside the satellites orbiting around the earth
d. All of these

Question 23: A satellite launching station should be
a. Near the equator region
b. Near the polar region
c. On the polar axis
d. On any place

Question 24: For the moon to cease to remain the earth’s satellite, its orbital velocity has to increase by a factor –
a. 2    b. √2    c. 1/√2    d. √3

Question 25: What will be the formula of mass of the earth in terms of g, R and G?

Question 26: Gravitational force between a point mass m and M separated by a distance is F. Now, if a point mass 2m is placed next to m in contact with it, the force on M due to m and the total force on M are:
a. 2F, F    b. F, 2F    c. F, 3F    d. F, F

Question 27: The distances of Neptune and Saturn from the sun are nearly 1013 and 1012 meters respectively. Assuming that they move in circular orbits, their periodic times will be in the ratio –
a. √10    b. 100    c. 10√10    d. 1/√10

Question 28: Which of the following graphs shows the variation of acceleration due to gravity g with depth h from the surface of the earth?
(1) (a)    (2) (b)    (3) (c)    (4) (d)

Question 29: A satellite is revolving around the earth in a circular orbit with a uniform speed. If the gravitational force suddenly disappears, then the satellite will
a. Continue to move in the same orbit with that speed
b. Move tangentially to the orbit with that speed
c. Move away from the earth normally to the orbit
d. Fall down on the earth

Question 30: A satellite can be in a geostationary orbit around a planet at a distance r from the centre of the planet. If the angular velocity of the planet about its axis doubles, a satellite can now be in a geostationary orbit around the planet if its distance from the centre of the planet is –

 Gravitation More Questions Answers  

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EduNews: JEE Main 2019 by NTA - Online Registration, Eligibility, Exam Date, Pattern, Admit card, Results and Preparation

 

What are JEE Main and JEE Advanced
NTA JEE Main 2019 - representative image
JEE or Joint Entrance Examination is a national level engineering entrance exam for getting admissions into engineering colleges across India. Till 2011, All India Engineering Entrance Examination (AIEEE) used to be conducted by CBSE every year. In the year 2012, CBSE announced the replacement of IIT JEE and AIEEE with Joint Entrance Examination (JEE). The AIEEE was replaced by JEE Main to facilitate admissions in 31 NITs, 20 IIITs and 18 other CFTIs (Centrally Funded Technical Institutes) while IIT JEE was replaced by JEE Advanced to facilitate admissions in the 23 IITs (Indian Institute of Technology) and ISM Dhanbad. From 2019 instead of CBSE, JEE Main will be conducted twice a year in the month of January and April respectively by National Testing Agency (NTA). If a candidate achieves a certain cut-off score which is decided every year, in JEE Main then he or she qualifies for JEE Advanced. Qualification in JEE Main is not the only criteria for selection as the candidate should have secured at least 75 per cent marks in the 12th class examination, or be in the top 20 percentile in the 12th class examination conducted by the respective Boards. For SC/ST candidates the qualifying marks would be 65 per cent in the 12th class examination.
National Test Agency (NTA) has released the notification for Joint Entrance Examination, JEE Main 2019. Students interested in applying for admissions to undergraduate B.Tech, BE and B.Arch courses are required to fill the JEE Main 2019 online application.
Eligibility for NTA JEE Main 2019
For BE/B.Tech: The student must have passed 10+2 examination with Physics and Mathematics as compulsory subjects along with Chemistry/Biotechnology/Biology/ Technical Vocational subject.
For B.Arch/B.Planning: The student must have passed 10+2 with Mathematics as one of the subjects.
Age Criteria: General category candidates – born on or after 1st of October 1994. SC, ST, and PwD category candidates – born on or after 1st of October 1989.
To know more about Online Registration, Eligibility, Exam Date, Pattern, Admit card, Results and Preparation, Syllabus of NTA JEE Main 2019 please visit official website of NTA (National Testing Agency) https://www.nta.ac.in
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