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Maharashtra State BoardSSC (English Medium) 10th Standard

Accessory whorls : Calyx and corolla : : essential whorls : ______________ - Science and Technology 2

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Question

Accessory whorls : Calyx and corolla : : essential whorls : ______________

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Solution

Accessory whorls : Calyx and corolla : : essential whorls : Androecium and gynoecium

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Chapter 3: Life Processes in Living Organisms Part - 2 - Relate the following

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SCERT Maharashtra Science and Technology 2 [English] 10 Standard SSC
Chapter 3 Life Processes in Living Organisms Part - 2
Relate the following | Q 5

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RELATED QUESTIONS

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


A student identified the various parts of an embryo of a gram seed and listed them as given below :

(I) Testa

(II) Plumule

(III) Radicle

(IV) Cotyledon

(V) Tegmen

Out of these the actual parts of the embryo are :

(A) I, II, III

(B) II, III, IV

(C) III, IV, V

(D) II, IV, V


Mention the changes a flower undergoes after fertilisation.


A flower may have either male or female reproductive parts. Such a flower is called ______.


How does the process of fertilisation take place in flowers?


The reproductive part of a plant is the ______.


Where are a plant's sex organs located?


What is the function of a flower?


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


 Give some examples of different modes of fertilisation in nature?


The correct sequence of reproductive stages occurring in flowering plants is ______ 


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

Pollen is produced in the:


Find the odd-one out, giving reason:

Anther, pollen grain, ovule male gamete


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Pollen grain, male gamete, female gamete, ovary.


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(a) Female germ cell

(b) Male germ cell

(c) Ovary


Describe an activity to demonstrate phototropism.


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


Pollen tube reaches the embryo sac via style.


Give scientific reason.

Fertilization in plants is called double fertilization.


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Identify the female gametophyte in angiosperms.


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Length of pollen tube depends on the distance between ______ 


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Type of sexual reproduction is ______.


The pollen tube usually enters the embryo sac ______.


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  1. gives rise to future shoot.
  2. gives rise to future root system.
  3. stores food. 


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