Identify the incorrect statement related to Pollination:

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

A typical angiosperm embryo sac at maturity is:

Which one of the following statements regarding post-fertilization development in flowering plants is incorrect ?

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

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

Double fertilization is exhibited by

Attractants and rewards are required for

Which of the following options gives the correct sequence of events during mitosis ?

Which of the following statements is not correct ?

In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein- rich layer called :

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?

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:

Given below are two statements :
Statement I : Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.
Statement II : Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets pollinated by fig wasp.
In the light of the above statements, choose the most appropriate answer from the options given below :

Match List I with List II :

Choose the option with all correct matches.

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) : 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 :

Identify the type of flowers based on the position of calyx, corolla, and androecium with respect to the ovary from the given figures (a) and (b).

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 fron the options given below:

Identify the correct description about the given figure:

What is the function of tassels in the corn cob?

Large, colourful, fragrant flowers with nectar are seen in

Given below are two statemente: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion: A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.
Reason R: Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.
In the light of the above statements, choose the correct answer from the options given below:

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:

The production of gametes by the parents, formation of zygotes, the F₁ and F₂ plants, can be understood from a diagram called:

Which of the following plants is monoecious?

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:
(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

What is the fate of the male gametes discharged in the synergid ?

In some plants, the female gamete develops into embryo without fertilisation. This phenomenon is known as

Persistent nucellus in the seed is known as

Offsets are produced by

Which of the following flowers only once in its life-time?

Double fertilisation is

The morphological nature of the edible part of coconut is

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

Functional megaspore in an angiosperm develops into

A dioecious flowering plant prevents both

Which one of the following statements is not true ?

The coconut water from tender coconut represents

Seed formation without fertilisation in flowering plants involves the process of