Reproduction in Organisms — Page 2 | NEET Biology

Q11

Geocarpic fruits are produced by

A onion

B watermelon

C ground nut

D carrot

Correct Answer

Option C

Solution

(c) Geocarpy: fruits develop underground. Groundnut is the classic example.

Q12

Syngamy can occur outside the body of the organism in

A Fungi

B Mosses

C Algae

D Ferns

Correct Answer

Option C

Solution

(c) In most algae and aquatic organisms, external fertilization occurs in water.

Q13

Meiosis takes place in

A Conidia

B Gemmule

C Megaspore

D Meiocyte

Correct Answer

Option D

Solution

(d) Meiosis occurs in meiocytes (mother cells); conidia and gemmules are asexual structures.

Q14

Monoecious plant of Chara shows

A stamen and carpel on the same plant

B upper antheridium and lower oogonium on the same plant

C upper oogonium and lower antheridium on the same plant

D antheridiophore and archegoniophore on the same plant

Correct Answer

Option C

Solution

(c) In Chara, oogonium (female) is above and antheridium (globule/male) is below on the same branchlet.

Q15

Select the wrong statement about gametes

A Anisogametes differ either in structure, function or behaviour

B In oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile

C Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy

D Isogametes are similar in structure, function and behaviour

Correct Answer

Option B

Solution

(b) In oomycetes female gamete is large and non-motile; male gamete is small and motile.

Q16

Seed formation without fertilization in flowering plants involves

A Sporulation

B Budding

C Somatic hybridisation

D Apomixis

Correct Answer

Option D

Solution

(d) Apomixis: asexual seed formation bypassing meiosis and fertilization.

Q17

Which of the following flowers only once in its life-time?

A Bamboo species

B Jackfruit

C Papaya

D Mango

Correct Answer

Option A

Solution

(a) Bamboo is monocarpic — flowers once, produces seeds, then dies.

Q18

In some plants, the female gamete develops into embryo without fertilisation. This phenomenon is known as

A Autogamy

B Parthenocarpy

C Syngamy

D Parthenogenesis

Correct Answer

Option D

Solution

(d) Parthenogenesis: development of embryo from unfertilized female gamete.

Q19

In which one pair can both plants be vegetatively propagated by leaf pieces?

A Agave and Kalanchoe

B Bryophyllum and Kalanchoe

C Asparagus and Bryophyllum

D Chrysanthemum and Agave

Correct Answer

Option B

Solution

(b) Bryophyllum and Kalanchoe both produce adventitious buds on their leaves for vegetative propagation.

Q20

Vegetative propagation in mint occurs by

A offset

B rhizome

C sucker

D runner

Correct Answer

Option C

Solution

(c) Mint (Mentha) propagates vegetatively through runners/stolons.