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

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Question

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

Fill in the Blanks

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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In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?


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


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


Sketch the reproductive parts of a flower.


Mature ovary forms the ______.


Name the swollen lower part of the carpel.


Name the male part of the flower.


What is the name of female organ of a flower (other than carpel)?


Where is the male gamete formed  in flowering plants?


Fill in the following blank with suitable word :

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


(a) Draw a neat diagram of a flower showing its various parts. In this diagram mark stem, receptacle, sepals, petals, stamen and carpel.
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(d) What is the other name of carpel of a flower?
(e) What is the name of yellow powdery substance present in the anther of a 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.
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Multiple choice question. Tick (✓) the correct choice:

Unisexual flowers are found in

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  2. mustard
  3. pea
  4. sunflower

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

The male gamete is present inside the which germinates.

  1. the style
  2. the stigma
  3. the anther
  4. the ovary

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A stamen consists of ______ and ________.


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

Stamens make egg cells.


Mention the function of Flower.


Mention the function of Anther.


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Pollen tube reaches the embryo sac via style.


What does germination mean?


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Double fertilization in angiosperms


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Where is the zygote located in the flower after fertilization?


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Give any two examples of agents of pollination.


What is the structural unit of sexual reproduction in plant?


The pollen tube usually enters the embryo sac ______.


State the post-fertilisation changes that lead to fruit formation in plants.


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