Male Reproductive Part

Question 1

Filament is responsible for

Answer 1

Transfer of nutrients to anther

Question 2

Microsporangium is also called

Answer 2

Anther

Question 3

Anther/ microsporangium are usually

Answer 3

1. Tetrasprangiate
2. Bilobed
3. Dithecous

Question 4

Filament is attached to

Answer 4

Thalamus

Question 5

Name the layers inside the anther

Answer 5

1. Epidermis
2. Endothecium
3. Middle layer
4. Tapetum

Question 6

What is the function of epidermis in anther

Answer 6

Responsible for protection

Question 7

Endothecium is responsible for

Answer 7

Helps on dehiscence of anther

Question 8

Middle layer is responsible for

Answer 8

Providing nutrition

Question 9

Tapetum is responsible for

Answer 9

Nutrition by taking food from middle layer and giving it to the microsporangium

Question 10

State alll the functions of tapetum(7)

Answer 10

1. Development of pollen grains
2. Formation of exine
3. Produces callase enzyme which helps in digestion of callose
4. Formation of pollen kit
5. Formation of sporopllenin
6. Pollen pistil interaction
7. Formation of ubish granules

Question 11

1 MMC ( microsporangium mother cell ) gives rise to how many pollen grains

Answer 11

4

Question 12

Exception family in which 1 mmc gives rise to 4 pollen grains out of which 3 degenerate

Answer 12

Cypheraceae family

Question 13

What will asymmetrical karyokinesis of microspore give

Answer 13

1. Vegetative cell
2. Generative cell

Question 14

Initially generative cell is attached to the ___________ and then floats in the __________ of vegetative cell

Answer 14

Pollen grain

Cytoplasm

Question 15

If male gametes are formed in the pollen sac before the pollen is released then
What would it have

Answer 15

3 cells, 1 Vegetative cell and 2 male gametes

Question 16

Vegetative cell is responsible for the formation of?

Generative cell is responsible for the formation of?

Answer 16

1. Pollen tube
2. Male gametes

Question 17

60 % of the angiosperms will have their male gametes released

Answer 17

In the pollen tube and it will have 2 cells
1 vc and 1 gc

Question 18

Mature pollen grain will have
1. 2 cells
Or
2. 3 cells

Answer 18

2 cells
1 vc and 1 gc

Question 19

Male gametophyte will have
1. 2 cell
Or
2. 3 cell

Answer 19

3 cell
1 vc & 2 male gametes

Question 20

When anther is young a group of compactly arranged homogenous cells called ____________________ occupies the centre of each microsporangium

Answer 20

Sporogenous tissue

Question 21

Ubsish bodies helps in the formation of

Answer 21

Exine

Question 22

Aero allergens examples(5)

Answer 22

Chenopodium, Parthenium , sorghum, amaranthus, ambrosia

Question 23

Which aero allergen causes hay fever

Answer 23

Ambrosia

Question 24

Longest pollen, long ribbon like without exine

Answer 24

Zostera ( sea grasses )

Question 25

Viability is lost within 30 mins

Answer 25

Rice and wheat

Question 26

Viability is maintained for months

Answer 26

Rosaceae, leguminoseae and solanaceae

Question 27

Temperature at which pollen grains are stored in pollen banks and their surrounding

Answer 27

-196 C, liquid nitrogen

Question 28

Size of pollen grain

Answer 28

25 - 50 micrometer

Question 29

Thick rigid and ornamental is feature of

Answer 29

Exine, outer wall

Question 30

Most resistant organic material known

Answer 30

Sporopollenin

Question 31

Pollen grains are welll preserved as ___________ because of the presence of sporopollenin

Answer 31

Fossils

Question 32

Intine is made of

Answer 32

Pectin and cellulose

Question 33

Places where exine is usually absent are called

Answer 33

Germ pore

Question 34

Dehiscence of anther takes place during which season

Answer 34

Dry season