Thursday, 16 May 2024

FLOWERING PLANTS (1)

      Showing an angiospermic plant
      
Calyx
Collection of sepals
• Accessory outermost whorl
• Provide protection to reproductive parts
Corolla
•Collction of petals 
• Accessory whorl inner to calyx
• Brightly coloured, help in pollination 
• Provide protection to reproductive parts.

Androecium
• Collection of stamens 
• Reproductive whorl, produce male gametes 

Gynoecium
• Innermost reproductive part
• Produce female gamete.

Fruit
• Contains seeds


A) Difine:

1) Androecium.
2) Axillary
3) Bud
4) Calyx
5) Capitulum 
6) Carpel
7) Corolla .
8) Disc-floret
9) Gynoecium 
10) Keel
11) Lamina
12) Legume (or pod)
13) Overy
14) Pappus
15) Pedicel
16) Petals 
17) Petiole
18) Ray floret.
19) Receptacle( or thalamus)
20) Root cap
21) Root hair
22) Sepals
23) Stamen
24) Standard 
25) Stigma 
26) Style: 
27) Wing: 


B)
1) Draw a labelled diagram of a flowering plant. 

2) Name the vegetative and reproductive parts of a flowering plant. Which of these are more important to the life of a plant and why ?

3) Name the parts of the embryo which develop into root system and shoot system

4) Give major functions of 
a) roots 
b) Stem
c) Leaf

5)  what is the function of 
a) Sepalas.
b) Petals.

6) Give the collective names of:
a) Petals
b) Sepals
c) Stamens
d) Carpels

7) State the difference between the following :
a) Node and Internode 
b) Fruits and seeds
c) Ray floret and Disc floret
d) Flower and  Influorescence

8)  How is root tip protected ?

9) What are buds? Name the types , location and function of the buds.


C) Name the following:
a) The two parts of a leaf.
b) The accessory parts of a flower.    
c) The essential parts of a flower.    
d) The part of the carpel which encloses ovules.    
e) The fruit found in pea family
f) The stalk of a flower.  

D) Match column
Column I         Column- II 
1) Root        a) female reproductive part
2) Sepalas  b) manufacturers food 
3) petals     c) fruit
4) androco  d) protects the floral parts in bud
5) ovary      e) attract the insects for pollination
6) Ovule     f) male reproductive part
7) Stem     g) seed
8) Leaf.     h) absorbs water and minerals 
9) gynoecium i) holds the leaves and flowers 


E) Fill in the blanks:
1) The main function of the root system is____ and ___.

2) The part of a flower which are essential for the reproduction include___ and ____.

3) The part of the stamens in which pollen grains are produced is ____.

4) The different floral whorls in a flower from outside to inside are____ , ____, ____ and ____.
1) Fixation, absorption of water and minerals 


F) Complete the following by selecting the correct word :

1) Fruit is the ripened ____. (Ovary/bud/stamen)

2) Calyx and corolla constitute the _____ in a flower. (Essential whorls/accessory whorls/receptacles)

3) _____ is necessary for fertilization. (Calyx/bud/pollination)

4) Modified hairy calyx in sunflower is called _____. (Pappus/keel/ray floret)


G) Mention whether the following statements are true or false:

1) Egg cell is present inside the ovule . 

2) In pea plant, the petals are equal in size .   

3) Two kinds of flowers are present in sunflower.   

4) Bell-shaped corolla is found in flowers of pea plant.   

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