Mark the incorrect statement

1. Hybrid seeds have to be produced every year

2. Production of hybrid seeds is costly

3. If the seeds collected from hybrids are sown, the progeny do not maintain hybrid characters

4. Cultivation of hybrids has decreased productivity

Subtopic:  Apomixis & Polyembryony |
 75%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Male and female plants are not separate in case of

1. Papaya and date-palm

2. Mulberry and papaya

3. Date-palm and mulberry

4. Castor and maize

Subtopic:  Pollination & Outbreeding Devices |
 75%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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In Polygonum type of embryo sac, polar nuclei

1. Are haploid

2. Can serve as a precursor of PEN

3. Occur in the large central cell

4. More than one option is correct

Subtopic:  Pistil: Female Gametophyte |
 77%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Endosperm development precedes embryo development because

1. It is  a product of triple fusiony

2. It provides nutrition to developing embryo

3. It is larger than embryo

4. Its development mostly occurs by free nuclear division in PEN

Subtopic:  Endosperm |
 84%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Viability of seeds

1. Maybe lost within a few months

2. Is 1000 years in Lupinus arcticus

3. Recorded in Phoenix is 10000 years

4. Can be tested by 0.1% solution of TTC

Subtopic:  Seed |
 62%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Pollen grains lose viability within 30 minutes of their release in the members of family

1. Rosaceae

2. Solanaceae

3. Poaceae

4. Leguminosae

Subtopic:  Stamen: Male Gametophyte |
 81%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Endosperm persists in the mature seeds of

1. Pea

2. Groundnut

3. Gram

4. Maize

Subtopic:  Seed |
 75%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Functional megaspore in Polygonum divides by free nuclear mitotic divisions and develops into 8 nucleated and 7 celled female gametophytes. The largest cell of this gametophyte is

1. Antipodal cell

2. Central cell

3. Synergid cell

4. Egg cell

Subtopic:  Pistil: Female Gametophyte |
 88%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Find the incorrect statements with respect to pollen grain in angiosperms plants

a. Germ pores are areas in pollen wall where intine and sporopollenin are absent

b. The vegetative cell is bigger, has abundant food reserves, and a large irregularly shaped nucleus

c. The fascinating array of patterns and designs are exhibited by exine wall

d. In over 60 percent of angiosperms, pollen grains are shed at 3-celled stage

1. c and d

2. a and d

3. b and d

4. a and c

Subtopic:  Stamen: Male Gametophyte |
 77%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Most of the aquatic and land plants are pollinated by

1. Insects or wind

2. Water and insects respectively

3. Abiotic factors only

4. Water and wind respectively

Subtopic:  Pollination & Outbreeding Devices |
 70%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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