Choose the correct statements
a. Perisperm is the persistant nucellus in the seeds of black pepper.
b. Single large cotyledon in grass is situated towards lateral side of the embryonal axis.
c. Seeds are the basis of agriculture.
d. Citrus has only one embryo in a seed.

1. Only a

2. Only a & b

3. Only a, b & c

4. a, b, c & d

Subtopic:  Endosperm | Seed |
 83%
Level 1: 80%+
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From the statements given below choose the option that are not true for a typical female gametophyte of a flowering plant:

(i) It is 8-nucleate and 7-celled at maturity.
(ii) It is cellular during the development.
(iii) It is situated inside the nucellus
(iv) It has an egg apparatus situated at the chalazal end
 
1. i and iv 2. ii and iii
3. i and ii 4. ii and iv
Subtopic:  Pistil: Female Gametophyte |
 66%
Level 2: 60%+
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Match the following and choose correct option
          Group A                        Group B
A. Aleurone layer               i. without fertilization

B. Parthenocarpic fruit       ii. Nutrition fruit

C. Ovule                           iii. Double fertilization

D. Endosperm                   iv. Seed

1. A-i, B-ii, C-iii, D-iv

2. A-ii, B-i, C-iv, D-iii

3. A-iv, B-ii, C-i, D-iii

4. A-ii, B-iv, C-i, D-iii

Subtopic:  Endosperm | Seed |
 94%
Level 1: 80%+
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Following are four statements. Find out the correct statements

(i) Microsporangia has four layers, outer three are protective and inner one is nutritive.
(ii) Each cell of sporogenous tissue within micorsporangia is capable of giving rise to a microspore tetrad.
(iii) Dehydration of anther is important for separation of pollen grains in a tetrad.
(iv) The generative cell in a pollen grain is small with respect to the vegetative cell and it floats in the cytoplasm of vegetative cell.

Options

1. All are correct

2. Only (i), (ii) and (iii) are correct

3. Except (ii) all are correct

4. Except (iii) all are correct.

Subtopic:  Stamen: Microsporangium | Stamen: Male Gametophyte |
 75%
Level 2: 60%+
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The pollen grain represents

1. Male gamete

2. Male gametophyte

3. Microsporophyll

4. Microsporangium

Subtopic:  Stamen: Male Gametophyte |
 87%
Level 1: 80%+
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Choose the correct option with respect to the function of the germ pore.

1. It allows growth of pollen tube

2. It allows water absorption in seed

3. It helps dehiscence of pollen grain

4. More than one option is correct

Subtopic:  Pollination & Outbreeding Devices |
 53%
Level 3: 35%-60%
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The number of mitotic generations required to form a mature embryo sac from megaspore in most of the flowering plants is

1. One 

2. Two 

3. Three

4. Four

Subtopic:  Pistil: Female Gametophyte |
 70%
Level 2: 60%+
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Hydrophily is limited to 30 genera which are mostly

1. Gymnosperms

2. Monocots

3. Dicots

4. More than one option is correct

Subtopic:  Pollination & Outbreeding Devices |
 78%
Level 2: 60%+
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Pollen pistil interaction is

1. Chemically mediated process

2. Dynamic process

3. Genetically controlled process

4. More than one option is correct

Subtopic:  Pollination & Outbreeding Devices | Post Pollination Events |
 73%
Level 2: 60%+
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The ovule of an angiosperm is technically equivalent to

1. Megasporangium

2. Megasporophyll

3. Megaspore mother cell

4. Megaspore

Subtopic:  Pistil: Ovule |
 82%
Level 1: 80%+
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