Reproduction in flowering plants

Question 1

Androecium (A)

Answer 1

consists of whorl of stamen. Male. Anther and filament

Question 2

Corolla (C)

Answer 2

Petals

Question 3

Calyx (K)

Answer 3

sepal

Question 4

Gynoecium (G)

Answer 4

carpel, female, stigma style ovary

Question 5

Flower is a modified

Answer 5

Shoot

Question 6

The proximal end of filament is attached to the

Answer 6

thalamus or petal.

Question 7

Typical angiosperm anther is

Answer 7

Bilobed

Question 8

Each lobe has_____ theca

Answer 8

2, dithecous

Question 9

Anther has ____ microsporangia

Answer 9

4, two in each lobe

Question 10

Microsporangia develop further to become

Answer 10

Pollen sac

Question 11

A typical anther has __ microsporangia

Answer 11

4, tetrasporangiate

Question 12

TS of anther is seen as

Answer 12

Tetragonal

Question 13

Microsporangium is surrounded by ______ wall layers

Answer 13

four

Question 14

4 layers of microsporangium are

Answer 14

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

Question 15

Outer 3 wall layers perform the function of

Answer 15

1.protection
2. help in dehiscence of anther

Question 16

Tapetum is inner most layer. Its fuction

Answer 16

provide nutrition to developing pollen grains

Question 17

Tapetal cells’ nucleus

Answer 17

multinucleated

Question 18

When anther is young, a group of homogenous cells called ____ occupies the centre of each microsporangium.

Answer 18

sporogenous tissue

Question 19

As each cell of sporogenous tissue is capable of giving rise to a

Answer 19

microspore tetrad

Question 20

Each one is a potential

Answer 20

pollen mother cell or microspore mother cell (PMC)

Question 21

Sporogenous tissue differentiate to form

Answer 21

Microspore mother cell (2n)

Question 22

As anther develops, cells of sporogenous tissue undergo meiosis to form

Answer 22

Microspore tetrad (n)

Question 23

Formation of microspores from a pollen mother cell through meiosis

Answer 23

Microsporogenesis

Question 24

As anthers dehydrate and mature microspores

Answer 24

dissociate from each other and develop into pollen grains

Question 25

Dehiscence of anther

Answer 25

Pollen grains/ microspores are released

Question 26

Pollen grains have________ walls

Answer 26

prominent two layered

Question 27

The hard outer layer

Answer 27

exine