Morphology of Flowering Plants — Page 18 | NEET Biology

Q171

The embryo in sunflower has

A one cotyledon

B two cotyledons

C many cotyledons

D no cotyledon

Correct Answer

Option B

Solution

(b) Sunflower is dicotyledonous — embryo has two cotyledons.

Q172

Which is the correct pair for edible part?

A Tomato - Fruit

B Maize - Cotyledons

C Guava - mesocarp

D Date palm - Mesocarp

Correct Answer

Option D

Solution

(d) Edible part of date palm is mesocarp (fleshy pericarp).

Q173

Pineapple (ananas) fruit develops from

A a multipistillate syncarpous flower

B a cluster of compactly borne flowers on a common axis

C a multilocular monocarpellary flower

D a unilocular polycarpellary flower

Correct Answer

Option B

Solution

(b) Pineapple is a sorosis fruit developed from a composite inflorescence.

Q174

In a cereal grain the single cotyledon of embryo is represented by

A scutellum

B prophyll

C coleoptile

D coleorhiza

Correct Answer

Option A

Solution

(a) Scutellum is the single cotyledon of cereal grain embryo.

Q175

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

A 42

B 63

C 84

D 21

Correct Answer

Option B

Solution

(b) Aleurone cells are part of endosperm (3n); 42 (2n) → n=21, so 3n=63.

Q176

The coconut water and the edible part of coconut are equivalent to :

A Endosperm

B Endocarp

C Mesocarp

D Embryo

Correct Answer

Option A

Solution

(a) Liquid endosperm is the edible part of coconut.

Q177

An aggregate fruit is one which develops from:

A Multicarpellary syncarpous gynoecium

B Multicarpellary apocarpus gynoecium

C Complete inflorescence

D Multicarpellary superior ovary

Correct Answer

Option B

Solution

(b) Aggregate fruits (etaerio) develop from the multicarpellary apocarpous ovary.

Q178

Which one of the following statements is correct?

A The seed in grasses is not endospermic.

B Mango is a parthenocarpic fruit.

C A proteinaceous aleurone layer is present in maize grain.

D A sterile pistil is called a staminode.

Correct Answer

Option C

Solution

(c) In monocots, outer covering of endosperm separates the embryo by a proteinous layer called aleurone layer.

Q179

Placenta and pericarp are both edible portions in:

A Apple

B Banana

C Tomato

D Potato

Correct Answer

Option C

Solution

(c) In tomato the edible part is pericarp and placenta.