Large, colourful, fragrant flowers with nectar are seen in:

NEET-2023 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• wind pollinated plants
• insect pollinated plants
• bird pollinated plants
• bat pollinated plants
Correct Option: B  [ insect pollinated plants ]

Remark:

In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are:

NEET-2023 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Synergids, antipodals and Polar nuclei
• Synergids, Primary endosperm nucleus and zygote
• Antipodals, synergids, and primary endosperm nucleus
• Synergids, Zygote and Primary endosperm nucleus
Correct Option: D  [ Synergids, Zygote and Primary endosperm nucleus ]

Remark:

What is the function of tassels in the corn cob?

NEET-2023 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• To protect seeds
• To attract insects
• To trap pollen grains
• To disperse pollen grains
Correct Option: C  [ To trap pollen grains ]

Remark:

Given below are two statements:
Statement I: Cleistogamous flowers are invariably autogamous.
Statement II: Cleistogamy is disadvantageous as there is no chance for cross pollination.
In the light of the above statements, choose the correct answer from the options given below :

NEET-2022 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Both Statement I and Statement II are correct
• Both Statement I and Statement II are incorrect
• Statement I is correct but Statement II is incorrect
• Statement I is incorrect but Statement II is correct
Correct Option: A  [ Both Statement I and Statement II are correct ]

Remark:

Identify the incorrect statement related to Pollination:

NEET-2022 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Pollination by water is quite rare in flowering plants
• Pollination by wind is more common amongst abiotic pollination
• Flowers produce foul odours to attract flies and beetles to get pollinated
• Moths and butterflies are the most dominant pollinating agents among insects
Correct Option: D  [ Moths and butterflies are the most dominant pollinating agents among insects ]

Remark:

Which part of the fruit, labelled in the given figure makes it a false fruit?

NEET-2022 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• A → Mesocarp
• B → Endocarp
• C → Thalamus
• D → Seed
Correct Option: C  [ C → Thalamus ]

Remark:

A typical angiosperm embryo sac at maturity is:

NEET-2021 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• 8-nucleate and 7-celled
• 7-nucleate and 8-celled
• 7-nucleate and 7-celled
• 8-nucleate and 8-celled
Correct Option: A  [ 8-nucleate and 7-celled ]

Remark:

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is :

NEET-2021 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Xenogamy
• Geitonogamy
• Chasmogamy
• Cleistogamy
Correct Option: A  [ Xenogamy ]

Remark:

In some members of which of the following pairs of families, pollen grains retain their viability for months after release?

NEET-2021 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Poaceae ; Rosaceae
• Poaceae; Leguminosae
• Poaceae; Solanaceae
• Rosaceae ; Leguminosae
Correct Option: D  [ Rosaceae ; Leguminosae ]

Remark:

Which of the following is incorrect for wind-pollinated plants?

NEET-(Oct)2020 [Sexual-Reproduction-in-Flowering-Plants] [class-xii ]

• Well exposed stamens and stigma
• Many ovules in each ovary
• Flowers are small and not brightly coloured
• Pollen grains are light and non-sticky
Correct Option: B  [ Many ovules in each ovary ]

Remark: