Sexual Reproduction in Flowering Plants

Arrange the following in the correct developmental sequence related to microsporogenesis : Choose the correct answer from the options given below :

1. A, D, C, B
2. D, A, C, B
3. B, D, C, A
4. B, D, A, C

Which one of the following is a triploid cell ?

1. Synergid
2. Primary endosperm cell
3. Central cell
4. Zygote

Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?

1. Geitonogamy
2. Xenogamy
3. Cleistogamy
4. Autogamy

Which of the following plants produces non-albuminous seeds?

1. Pea
2. Wheat
3. Maize
4. Barley

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?

1. Polar nucleus
2. Antipodals
3. Synergids
4. Central cells

If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm?

1. 72
2. 18
3. 36
4. 54

How many thecae are present in each lobe of a typical bilobed angiosperm anther?

1. 12
2. 2
3. 6
4. 8

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below:

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A

How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

1. 1 Meiosis and 3 Mitosis
2. No Meiosis and 2 Mitosis
3. 2 Meiosis and 3 Mitosis
4. 1 Meiosis and 2 Mitosis

Given below are two statements : One is labelled as Assertion (A) and other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

1. A is true but R is false
2. A is false but R is true
3. Both A and R are true and R is the correct explanation of A
4. Both A and R are true but R is NOT the correct explanation of A

Identify the set of correct statements: Choose the correct answer from the options given below.

1. C, D and E only
2. A, B, C and D only
3. A, C, D and E only
4. B, C, D and E only

Identify the correct description about the given figure : [Figure]

1. Wind pollinated plant inflorescence showing flowers with well exposed stamens.
2. Water pollinated flowers showing stamens with mucilaginous covering.
3. Cleistogamous flowers showing autogamy.
4. Compact inflorescence showing complete autogamy

Which part of the ovule stores reserve food materials?

1. Nucellus
2. Integument
3. Placenta
4. Funicle

Pollen grains remain preserved as fossils due to the presence of :

1. Epidermal layer
2. Tapetum
3. Exine layer
4. Intine layer

The part marked as ‘x’ in the given figure is [Figure]

1. Endosperm
2. Thalamus
3. Endocarp
4. Mesocarp

What is the function of tassels in the corn cob?

1. To trap pollen grains
2. To disperse pollen grains
3. To protect seeds
4. To attract insects

Large, colourful, fragrant flowers with nectar are seen in

1. Bird pollinated plants
2. Bat pollinated plants
3. Wind pollinated plants
4. Insect pollinated plants

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

1. Antipodals, synergids, and primary endosperm nucleus
2. Synergids, Zygote and Primary endosperm nucleus
3. Synergids, antipodals and Polar nuclei
4. Synergids, Primary endosperm nucleus and zygote

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below :

1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Identify the incorrect statement related to Pollination:

1. Pollination by water is quite rare in flowering plants
2. Pollination by wind is more common amongst abiotic pollination
3. Flowers produce foul odours to attract flies and beetles to get pollinated
4. Moths and butterflies are the most dominant pollinating agents among insects

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

1. A Mesocarp
2. B Endocarp
3. C Thalamus
4. D Seed

The residual persistent part which forms the perisperm in the seeds of beet is

1. Integument
2. Calyx
3. Endosperm
4. Nucellus

To ensure that only the desired pollens fall on the stigma in artificial hybridization process Choose the correct answer from the options given below

1. A, D and E only
2. A, B and C only
3. B, C and D only
4. B, C and E only

In general the egg apparatus of embryo sac in angiosperm consists of

1. One egg cell, two synergids, two antipodal cells, two Polar nuclei
2. One egg cell, two synergids, three antipodal cells, two Polar nuclei
3. One egg cell, two synergids, two antipodal cells, three Polar nuclei
4. One egg cell, three synergids, two antipodal cells, two Polar nuclei

Which of the following can be expected if scientists succeed in introducing apomictic gene into hybrid varieties of crops?

1. There will be segregation of the desired characters only in the progeny
2. Polyembryony will be seen and each seed will produce many plantlets
3. Seeds of hybrid plants will show longer dormancy
4. Farmers can keep on using the seeds produced by the hybrids to raise new crop year after year

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 :

1. Cleistogamy
2. Xenogamy
3. Geitonogamy
4. Chasmogamy

A typical angiosperm embryo sac at maturity is :

1. 8-nucleate and 8-celled
2. 8-nucleate and 7-celled
3. 7-nucleate and 8-celled
4. 7-nucleate and 7-celled

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

1. Rosaceae : Leguminosae
2. Poaceae : Rosaceae
3. Poaceae : Leguminosae
4. Poaceae : Solanaceae

The body of the ovule is fused with the funicle at

1. Chalaza
2. Hilum
3. Micropyle
4. Nucellus