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What is pollination?

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What is pollination?

What is meant by pollination?

Short Answer
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Solution

Pollination is the transfer of pollen grains from the anther (the male part) of a flower to the stigma (the female part) of the same flower or another flower of the same species.

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Chapter 2: Reproduction in Plants - Long Answer question [Page 26]

RELATED QUESTIONS

Name the parts A, B and C shown in the diagram and write their functions.


A student while observing an embryo of a pea seed in the laboratory listed various parts of the embryo as given below:

Testa, Tegmen, Radicle, Plumule, Micropyle, Cotyledon.

On examining the list the teacher remarked that only three parts are correct. Select three correct parts from the above list:

(a) Testa, Radicle, Cotyleddon

(b) Tegmen, Radicle, Micropyle

(c) Cotyledon, Plumule, Testa

(d) Radicle, Cotyledon, Plumule


Name the parts A, B and C shown in the following diagram and state one function of each.


Give one example of a unisexual flower.


The anther contains ______.


The fusion of male and female gametes is termed as ______.


Name the part made up of the stigma, style and ovary.


Where are a plant's sex organs located?


Explain the terms 'self pollination'


Explain the term 'fertilisation'.


In tobacco plant, the male gametes have 24 chromosomes.

What is the number of chromosomes in the female gamete?


How does pollination occur?


What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?


Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seed, embryo
(b) seed, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seed
(d) embryo, seed, pollination, fertilisation


One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style


In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.


Put a tick mark (✓) against the correct alternative in the following statement

Pollen is produced in the:


Multiple choice question. Tick (✓) the correct choice:

Unisexual flowers are found in

  1. mulberry
  2. mustard
  3. pea
  4. sunflower

State whether the following statement is true (T) or false (F):

Stamens make egg cells.


Mention the function of Flower.


What are the male and female gametes in a flowering plant?


What is phototropism?


Identify the odd. Stigma, Style, Pollen, Ovary.


Fill in the blank by selecting suitable word:

Transfer of pollen grains from the anther to the stigma is known as______________. 


Mention pollination types.


A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope


What is meant by pollination?


What does germination mean?


Write the functions of sepals


Antipodal cells are present towards the ______ in an anatropous ovule.


Which of the following is the outermost protective layer of anther?


The 3-celled egg apparatus at the micropylar end comprises of ______


Sperm and egg nuclei fuse due to ______.


The seed that contains the future plant is called the ______ 


The process of release of eggs from the ovary is called ______ 


Pollen grains are produced by ______ 


Variations occur as a result of ______ 


Complete the table

Carly x  ______  ______
 ______ petal attract insects
Androecium  ______ Male reproductive part
 ______ ______ Female reproductive part.

Which among the following statements are true for sexual reproduction in flowering plants?

  1. It requires two types of gametes
  2. Fertilisation is a compulsory event
  3. It always results in formation of zygote
  4. Offspring formed are clones

In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.


The ovaries of different flowers may contain ______.


What are the agents for pollination?


Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.


Explain the post fertilization changes that occur in the ovary of a flower.


  • Assertion: Primary endosperm nucleus is diploid.
  • Reason: It is the product of double fertilisation.

In male reproductive whorl of a flower the archesporial cells are formed by ______.


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