Sexual Reproduction in Flowering Plants PYQs

Arrange the following in the correct developmental sequence related to microsporogenesis: A. Microspore tetrads B. Sporogenous tissue C. Pollen grains D. Pollen mother cells Choose the correct answer from the options given below :

Which one of the following is a triploid cell?

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

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both wind and water pollinated flowers are not very colourful and do not produce nectar. Reason (R) : The flowers produce enormous amount of pollen grains in wind and water pollinated flowers. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled. Reason (R) : The egg apparatus has 2 polar nuclei. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus. Reason (R) : Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells. In light of the above statements, choose the most appropriate answer from the options given below :

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?

Identify the set of correct statements: A. The flowers of Vallisneria are colourful and produce nectar. B. The flowers of waterlily are not pollinated by water. C. In most of water-pollinated species, the pollen grains are protected from wetting. D. Pollen grains of some hydrophytes are long and ribbon like. E. In some hydrophytes, the pollen grains are carried passively inside water. Choose the correct answer from the options below:

Identify the part of the seed from the given figure which is destined to form root when the seed germinates.

Identify the correct description about the given figure:

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

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

What is the function of tassels in the corn cob?

Identify the incorrect statement related to Pollination:

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:

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

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:

Gemmae are present in:

A typical angiosperm embryo sac at maturity is:

Which of the following statements is correct?

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

The plant parts which consist of two generations - one within the other are (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovuleThe plant parts which consist of two generations - one within the other are (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule

In water hyacinth and water lily, pollination takes place by:

The body of the ovule is fused within the funicle at

Which is the most common type of embryo sac in angiosperms?

What type of pollination takes place in Vallisneria?

In which one of the following, both autogamy and geitonogamy are prevented?

Double fertilization is:

Which of the following has proved helpful in preserving pollen as fossils?

Offsets are produced by:

Double fertilization is exhibited by

Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by

Attractants and rewards are required for

Functional megaspore in an angiosperm develops into

A dioecious flowering plant prevents both:

Which one of the following statements is not correct?

In majority of angiosperms

Pollination in water hyacinth and water lily is brought about by the agency of

The ovule of an angiosperm is technically equivalent to

Male gametophyte in angiosperms produces:

Coconut water from a tender coconut is:

Filiform apparatus is characteristic feature of:

Which one of the following fruits is parthenocarpic?

In angiosperms, microsporogenesis and megasporogenesis:

Flowers are unisexual in:

Geitonogamy involves:

Male gametophyte with least number of cells is present in:

An aggregate fruit is one which develops from:

Function of filiform apparatus is to:

Select the wrong statement:

Megasporangium is equivalent to

Which one of the following statements is correct?

Product of sexual reproduction generally generates

Advantage of cleistogamy is

Perisperm differs from endosperm in

Plants with ovaries having only one or a few ovules, are generally pollinated by:

What is the function of germ pore?

Which one of the following statements is wrong?

Which one of the following pairs is wrongly matched while the remaining three are correct?

In angiosperms, functional megaspore develops into:

What is common between vegetative reproduction and apomixis?

Which one of the following is considered important in the development of seed habit?

Vegetative propagation in mint occurs by:

Which one of the following plants is monoecious?

In which one of the following male and female gametophytes do not have free living independent existence?

Endosperm is consumed by the developing embryo in the seed of

Which one of the following is resistant to enzyme action?

Which one of the following pairs of plant structures has haploid number of chromosomes?

What does the filiform apparatus do at the entrance into ovule?

Unisexuality of flowers prevents

Write the location and function of Synergid.

Which type of ovule is shown in diagram? Give one reason.

What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?

Long filamentous threads protruding at the end of a young cob of maize are:

The arrangement of the nuclei in a normal embryo sac in dicot plants is:

In a cereal grain the single cotyledon of embryo is represented by:

In which one pair both the plants can be vegetatively propagated by leaf pieces?

In a type of apomixis known as adventive embryony, embryos develop directly from the:

Through which cell of the embryo sac does the pollen tube enter the embryo sac?

Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other?

Why is vivipary an undesirable character for annual crop plants?