🏫 Board🧬 Biology

How do Organisms Reproduce?

11 Board Biology previous year questions on How do Organisms Reproduce? — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW

Buds on leaf develop in :

a

Mint

b

Potato

c

Bryophyllum

d

All of the above

✓ Correct answer: c)

Bryophyllum

Explanation

Correct answer: (C) Bryophyllum

Explanation:
In Bryophyllum, adventitious buds develop on the margins of leaves. These buds grow into new plants when they fall on the soil. Mint reproduces by stem (runner) and potato by tuber, not by leaf buds.

Q2

The fully developed ovary is called as

a

fruit

b

seed

c

ovule

d

none of these

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Q3

Copper-T is fitted in which part of female reproductive system ?

a

Ovary

b

Oviduct

c

Uterus

d

Vagina

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Q4

Sexually transmitted disease is

a

Jaundice

b

Chickenpox

c

AIDS

d

Plague

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Q5

Example of unisexual flower is :

a

Flower of Papaya

b

Flower of Rose

c

Flower of Mustard

d

Flower of Mango

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Q6

An example of vegetative propagation through leaves is

a

Onion

b

Potato

c

Rose

d

Bryophylum

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Q7

Pollen sac contains:

a

Sepals

b

Ovary

c

Ovules

d

Pollen grains

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Q8

The changes that occur during adolescence are called

a

Diversity

b

Germination

c

Puberty

d

None of these

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Q9

In which of the following plants are flowers unisexual?

a

Papaya

b

Hibiscus

c

Brassica

d

Pisum sativum

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Q10

Which of the following is an effective measure used in family planning?

a

Diaphragm

b

Condom

c

Copper T and loop

d

All of these

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Q11

Which of the following is found in pollen sac ?

a

Stigma

b

Pollen grains

c

Corolla

d

None of these

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