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Name the Male Part of the Flower. - Science

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Question

Name the male part of the flower.

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Solution

Stamen is the male part of the flower.

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Chapter 3: How do Organisms Reproduce? - Exercise 2 [Page 168]

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Lakhmir Singh Biology (Science) [English] Class 10
Chapter 3 How do Organisms Reproduce?
Exercise 2 | Q 4.1 | Page 168

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RELATED QUESTIONS

Match the following:

Column A Column B
(i) Stigma (a) Neuron
(ii) Pepsin (b) Carpel
(iii) Dendrites (c) Protein
(d) Stamen

 


Name the parts labelled as A, B, C and D in the diagram given below:-


Mention the changes a flower undergoes after fertilisation.


You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:

I. Soak the gram seeds in plain water and keep them overnight.

II. Cut open a soaked seed and observe its different parts.

III. Take some dry gram seeds in a petri dish.

IV. Drain the excess water.

V. Cover the soaked seeds with a wet cotton cloth and leave them for a day.

The correct sequence of these steps is :

(A) III, I, V, IV, II

(B) III, I, II, IV, V

(C) III, IV, V, I, II

(D) III, I, IV, V, II


The anther contains ______.


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


Explain what you understand by sexual reproduction.


State the name of the functional unit concerned with sexual reproduction.


Name the swollen lower part of the carpel.


Fill in the following blank with suitable word :

The male organ of reproduction in the flower is the.......... .


Fill in the following blank with suitable word :

The.......... at the base of the carpel contains egg cells.


Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.


How is the process of pollination different from fertilization?


In tobacco plant, the male gametes have 24 chromosomes.

What is the number of chromosomes in the female gamete?


The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style


The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
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(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?


When an insect sits on the flower of a plant then some particles A present in the top of little stalks in the flower attach to its body hair. When this insect now sits on the flower of another similar plant, then particles A attached to the hair of insect are put on the top of a flask-shaped organ at the centre of flower. The particle A grows a long tube b from the top of flask-shaped organ through which C moves down and reaches the bottom part of flask-shaped organ. Here C fuses with the nucleus of d contained in structure E. the fusion of C and D forms a new cell f which grows and develops into a seed of the plant.
(a) What are particles A? What is the process of transferring A from one flower to another flower of similar plant by the insect known as?
(b) What is the name of tube B?
(c) What is C which moves down through the tube B?
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In what ways is fertilisation in a plant similar to fertilisation in a human?


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

Unisexual flowers are found in

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

Mention the function of Flower.


Mention the function of Anther.


Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.


Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.


“Cell division is a type of reproduction in unicellular organism.” Justify.

 

 

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Pollen grain, male gamete, female gamete, ovary.


Write the names of male and female reproductive parts of a flower.


Sketch the labeled diagram: 

Flower with its sexual reproductive organs 


Explain sexual reproduction in plants. 


Prepare a slogan for campaign against female foeticide.


Answer the following question.
How does suitable pollination lead to fertilization?


Find the odd one out:


Define.

Inflorescence


Give scientific reason.

Fertilization in plants is called double fertilization.


Match the following

1. Petal Opuntia
2. Fern Chrysanthemum
3. Phylloclade Attracts insect
4. Hooks Spore
5. Sucker Bignonia

The essential parts of a flower are ______.


Write the events involved in the sexual reproduction of a flowering plant.

Discuss the first event and write the types.


In which part of the flower germination of pollen grains takes place?


Which of the following are the chemical components of the wall of pollen tube?


Which type of development is observed in male gametophytes of plants?


In a flowering plant, archesporium gives rise to ______.


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


Conidia are formed endogenously while zoospores are formed endogenously.


The seed that contains the future plant is called the ______ 


Length of pollen tube depends on the distance between ______ 


Complete the table

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

Give reason for the following:

Fertilization cannot take place in flowers if pollination does not occur.


Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?


Double fertilization means ______.


Give any two examples of agents of pollination.


Type of sexual reproduction is ______.


The pollen tube usually enters the embryo sac ______.


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


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