The cells of which of the following layers of the anther wall are multinucleated due to endomitosis?

(1) Epidemis

(2) Endothecium

(3) Middle layer

(4) Tapetum

Subtopic:  Stamen: Anther |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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A typical angiosperm anther is dithecous which means that it is:

(1) One lobed and the lobe has two theca

(2) Two lobed and each lobe has two theca

(3) Two lobed and each lobe has one theca

(4) Four lobed and each lobe has two theca

Subtopic:  Stamen: Anther |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Which of the following layers in the wall of an anther nourishes the developing pollen grains?

1. Tapetum

2. Epidermis

3. Endothecium

4. Middle layers

Subtopic:  Stamen: Anther |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Pollen intine is made of:

1. Sporopollenin

2. Cellulose and pectin

3. Ergosterol

4. Phospholipids and cholesterol

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Pollen grains lose their viability within 30 minutes of their release in:

1. Rose

2. Potato

3. Pea

4. Wheat

Subtopic:  Stamen: Male Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The pistil of Papaver is:

1. Monocarpellary

2. Multicarpellary apocarpous

3. Multicarpellary syncarpous

4. Absent

Subtopic:  Pistil: Ovule |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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How many of the nuclei in the female gametophyte in angiosperms are surrounded by cell wall?

(1) 5

(2) 6

(3) 7

(4) 8

Subtopic:  Pistil: Female Gametophyte |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The only type of pollination that brings genetically different types of pollen grains to the stigma is:

(1) Chasmogamy

(2) Cleistogamy

(3) Geitonogamy

(4) Xenogamy

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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The aquatic plant in which pollination is not carried out by water is:

(1) Vallisneria

(2) Water lily

(3) Zostera

(4) Hydrilla

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Dioecy in plants prevents:

(1) Autogamy but not geitonogamy

(2) Geitonogamy but not autogamy

(3) Both autogamy and geitonogamy

(4) Neither autogamy nor geitonogamy

Subtopic:  Pollination & Outbreeding Devices |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: