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Maharashtra State BoardSSC (English Medium) 10th Standard

What is the structural unit of sexual reproduction in plant? - Science and Technology 2

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Question

What is the structural unit of sexual reproduction in plant?

One Line Answer
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Solution

Flower is the structural unit of the sexual reproduction in plant.

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RELATED QUESTIONS

A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:

I. Tegmen

II. Testa

III. Cotyledon

IV. Radicle

V. Plumule

The correctly identified parts among these are

(A) I, II and III

(B) II, III and IV

(C) III, IV and V

(D) I, III, IV and V


What is pollination?


Name and differentiate between the two modes of pollination in flowering plants.


Where are the pollen grains produced?


Where are a plant's sex organs located?


Where is the female gamete formed  in flowering plants?


Fill in the following blank with suitable word :

Ovules contain ......... gametes of a plant.


Fill in the following blank with suitable word :

The ovary of a flower becomes ....... after fertilisation.


Fill in the following blank with suitable word :

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


What is made in ovary of a flower?


Explain the terms 'self pollination'


 Give some examples of different modes of fertilisation in nature?


Name the part of a seed which contains stored food.


In tobacco plant, the male gametes have 24 chromosomes.

What is the number of chromosomes in the female gamete?


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


What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.


Fill in the blank:

Seeds are formed from________.


In the figure, the parts marked A, B and C are sequentially:


(A) Plumule, Radicle and Cotyledon

(B) Radicle, Plumule and Cotyledon

(C) Plumule, Cotyledon and Radicle

(D) Radicle, Cotyledon and Plumule


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


Describe an activity to demonstrate phototropism.


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


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


Differentiate between self-pollination and cross-pollination.


What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.


Calyx : Sepals : : Corolla : ________________


Pollen tube reaches the embryo sac via style.


Pollen grains from anther are transferred to the stigma.


Distinguish between self-pollination and cross-pollination.


Where does the endothecium layer of anther lobes is present?


In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?


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


Pineapple fruit develops from ______.


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 unisexual flowers?

  1.  They possess both stamen and pistil
  2. They possess either stamen or pistil
  3. They exhibit cross pollination
  4. Unisexual flowers possessing only stamens cannot produce fruits

Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.


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