In bryophytes and pteridophytes, transport of male gametes requires

Which one of the following statements is not true?

Seed formation without fertilization in flowering plants involves the process of

Which of the following statements is not correct?

The coconut water from tender coconut represents

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

The morphological nature of the edible part of coconut is

A dioecious flowering plant prevents both

Attractants and rewards are required for

Functional megaspore in an angiosperm develops into

Which of the following flowers only once in its lifetime?

Offsets are produced by

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

Double fertilization is

Pollen grains can be stored for several years in liquid nitrogen having a temperature of

The body of the ovule is fused within the funicle at:

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

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

Which of the following plants is monoecious?

A typical angiosperm embryo sac at maturity is:

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:

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

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

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

What is the function of tassels in the corn cob?

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

Given below are two statements: $\newline$Statement A: In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents. $\newline$Statement R: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. $\newline$Choose the correct answer from the options given below:$$

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