Find out the correct statement:

  • Life spans of organisms are necessarily correlated with their sizes

  • The sizes of crows and parrots are not very different, so their life spans are almost similar

  • A peepal tree has much shorter life span as compared to a mango tree

  • Reproduction is essential for continuity of species on the earth

Which of the following is a false statement?

  • All organisms have evolved similar mechanism to multiply and produce offsprings

  • Asexual reproduction is uniparental

  • Sexual reproduction is biparental

  • In asexual reproduction no fertilization occurs

Individuals of a clone:

  • Are genetically similar but morphologically different

  • Are morphologically similar but genetically different

  • Are morphologically and genetically similar

  • Are genetically and phenotypically different

Asexual reproduction is common:

  • Among single celled organisms only

  • Among plants only

  • Among single celled organisms, plants and all animals

  • Among single celled animals, plants and animals with simple organizations

Which of the following is not vegetative propagule?

  • Rhizome and sucker

  • Tuber and offset

  • Bulbil (e.g. in Agave), leaf buds, bulb

  • Antherozoid

Identify A to D in given diagrams showing asexual reproductive structure:

        

  • A - Zoogamete, B - Bud, C - Conidia , D – Gemmule

  • A - Zoospore, B - Conidia, C - Bud, D – Gemmule

  • A- Zoospore, B - Conidiosporangium, C - Bud, D – Gemmule

  • A - Aplanospore, B - Conidia, C - Bud, D - Gemmule

Examine the figures given below and select the right options out of (a - d); in which all the 4 items A, B, C and D are identified correctly:

        

 

   A

    B

   C

    D

(1)  

Tuber   

Offset

Sucker

Leaf buds

(2)

Offset

Sucker

Stolon   

Leaf buds

(3)

Offset

Sucker

Stolon

Leaf buds

(4)

Tuber

Rhizome

Bulbil

Leaf buds

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  • 2
  • 3
  • 4

Which of the following is false about internal fertilization?

I. Male gamete is motile

II. Male gametes are non-motile

III. Male gametes are produced in large number

IV. Male gametes are produced in small number

V. There is a significant reduction in the number of eggs produce

VI. In seeded plants non-motile male gametes are carried to female gamete by pollen tubes

  • I, III, V, VI

  • III, IV

  • II, IV

  • V, VI

Select the-correct sequence from the following:

  • Gametogenesis → Syngamy → Zygote → Embryogenesis

  • Gametogenesis → Syngamy → Embryogenesis → Zygote

  • Zygote → Embryogenesis → Gametogenesis

  • Syngamy → Gametogenesis → Zygote → Embryogenesis

Select the correct sequence from the following:

I. Juvenile phase → Senescent phase → Reproductive phase

II. Juvenile phase → Reproductive phase → Senescent phase

III. Reproductive phase → Juvenile phase → Senescent phase

IV. Vegetative phase → Reproductive phase → Senescent phase

  • I and II

  • I and IV

  • III and IV

  • II and IV

I. Bamboo species flower only once in their life time, generally after 50 -100 years, produce large number of fruits and die

II. In animals the juvenile phase is followed by physiological changes prior to active reproductive behaviour.

III. The reproductive phase is of same duration in all organisms.

IV. Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity.

V. In plants juvenile phase is also called vegetative phase.

Which of the following statements is false?

  • I

  • II

  • III

  • V

Many mammals, especially in natural, wild conditions are:

  • Continuous breeders

  • Seasonal breeders

  • Both continuous and seasonal breeders

  • Very much disease sensitive

Which of the following regulates the reproductive processes and the associated behavioural expressions of organisms?

  • Hormones

  • Environmental factors

  • Abiotic components

  • Interaction between hormones and environmental factors

Meiosis:

  • Does not take place in organisms showing asexual reproduction only

  • Takes place in some sexually reproducing haploid organism

  • Takes place in sexually reproducing diploid organism

  • All of the above are correct

Reptiles and birds are:

  • Oviparous

  • Viviparous

  • Ovoviviparous

  • Viviparous and oviparous respectively

Find out the incorrect statement(s):

  • The chances of survival of young ones are greater in viviparous animals than in oviparous animals

  • In Datura, tomato, etc. sepals remain attached even after fertilization

  • Asexual reproduction is better than sexual reproduction

  • All of these

Ploidy of ovary, anther, egg, pollen, male gamete and zygote are respectively:

  • 2n, 2n, n, 2n, n, 2n

  • 2n, 2n, n, n, n, 2n

  • 2n, n, n, n, n, n

  • 2n, 2n, n, 2n, 2n, 2n

Assertion   :       Individuals produced by asexual reproduction are genetically simillar to parents.

Reason      :       Asexual reproduction involves only mitotic divisions.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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  • 2
  • 3
  • 4

Assertion   :       Amoeba shows multiple fission during unfavourable conditions.

Reason      :       Chances of survival are less during unfavourable conditions.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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  • 2
  • 3
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Match the following

5. Budding            T- Hydra

6. Binary fission   U- Sponge

A.1-R, 2-S, 3-T, 4-U, 5-P, 6-Q

B.1-P, 2-Q, 3-U, 4-T, 5- S, 6-R

C. 1-R, 2-S, 3-T, 4-P, 5-Q, 6-U

D.1-R, 2-S, 3-U, 4-T, 5-P, 6-Q

  • Zoospores        P- Yeast

  • Conidia             Q- Amoeba

  • Buds                  R- Chlamydomonas

  • Gemmules       S- Penicillium

Match the following

1-Eyes of              P-Ginger

2-Rhizone of       Q-Potato

3-Bulbil of           R- Agave

4-Leaf buds of    S- Bryophyllum

5-Offset of          T-Water hyacinth

A. 1-Q, 2-R, 3-P, 4-S, 5-T

B. 1-S, 2-P, 3-R, 4-Q, 5-T

C. 1-Q, 2-P, 3-R, 4-S, 5-T

D. 1-T, 2-P, 3-R, 4-S, 5-Q
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  • 2
  • 3
  • 4

An invasive weed found in standing water is

  • A. Grass

  • B. Lotus

  • C. Aquarium oxygen plant

  • D. Water hyacinth

In vegetative propagation, when the _____ come in contact with damp soil or water, they produce roots and new plants.

  • Shoot

  • Node

  • Axial shoot

  • Seed

Which among the following is immortal

  • A. Sea algae

  • B. Amoeba

  • C. Plants grown by vegetative propagation

  • D. Every living organism is mortal

The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase. In non-primate mammals it is known as

A. Oestrus cycle

B. Menstrual cycle

C. Reproductive cycle

D. Sexual cycle
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  • 2
  • 3
  • 4

Parthenogenesis is the development of an organism directly from:

A.Female gametes

B.Vegetative cells

C.Fertilized ovum

D.None

  • 1
  • 2
  • 3
  • 4

Which type of stem modification is seen in banana?

  • .Stem tuber

  • .Bulb

  • C.Corn

  • .Rhizome

In which of the following, gametes are released in the surrounding medium

  • .Fishes

  • .Amphibians

  • C.Earthworm

  • .Both A and B

Find the monoecious plant

  • .Coconut

  • .Cucurbits

  • C.Both A and B

  • .Papaya

If the gametes are similar in their appearance they are called as

  • A.Anisogametes

  • B.Isogametes

  • C.Homogametes

  • D.Both B an C

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Practice Botany Quiz Questions and Answers