GYNOECIUM

Question 1

Gynoecium with single pistil

Answer 1

Monocarpellary

Question 2

Gynoecium with many pistils

Answer 2

Multicarpellary

Question 3

Multicarpellary gynoecium with fused pistils

Answer 3

Syncarpous

Question 4

eg. of multicarpellary syncarpous pistil

Answer 4

Papaver

Question 5

Multicarpellary gynoecium with free pistils

Answer 5

Apocarpous

Question 6

eg. of apocarpous pistil

Answer 6

Michelia

Question 7

Stigma serves as landing platform for microspores.

True/False

Answer 7

False

For pollen grains

Question 8

Elongated slender part of pistil

Answer 8

Style

Question 9

Basal bulged part of pistil

Answer 9

Ovary

Question 10

Ovarian cavity which has placenta located inside it is called________

Answer 10

Locule

Question 11

Megasporangia, commonly called ovules arise from __________

Answer 11

Placenta

Question 12

Examples of plants with one ovule

3

Answer 12

Wheat, paddy, mango

Question 13

Examples of plants with many ovules

3

Answer 13

Papaya, watermelon, orchids

Question 14

Ovule is attached to placenta by a stalk called ________

Answer 14

Funicle

Question 15

____________ is the junction b/w ovule and funicle or the region where bodies of ovule and funicle fuse.

Answer 15

Hilum

Question 16

One or two protective envelopes of ovule are called _______

Answer 16

Integuments

Question 17

At the tip of ovule, a small opening that is not integumented is present which is called __________

Answer 17

Micropyle

Question 18

Basal part of ovule, opp. to micropylar end is called

Answer 18

Chalaza

Question 19

Mass of cells within integuments is called________

Answer 19

Nucellus

Question 20

Cells of nucellus lack reserve food material

True/false

Answer 20

False

have abundant food material

Question 21

Female gametophyte, located in nucellus is also called ___________

Answer 21

Embryo sac

Question 22

An ovule generally has________(no.) embryo sac formed from a __________

Answer 22

1, megaspore

Question 23

Describe megaspore mother cell

3 characters

Answer 23

1. Large cell
2. Dense cytoplasm
3. Prominent nucleus

Question 24

Ovules generally differentiate ________(no.) MMC in the ________ region.

Answer 24

1, micropylar

Question 25

In majority of flowering plants , 3 of megaspores are functional while 1 left degenerates. | True/false

Answer 25

False | 1 functional, other 3 degen.

Question 26

Functional megaspore develops into_________

Answer 26

Embryo sac(female gametophyte)

Question 27

Development of embryo sac is monosporic/bisporic

Answer 27

Monosporic | Develops from single megaspore

Question 28

What do we mean by free nuclear mitotic division?

Answer 28

Nuclear divisions not followed immediately by cell wall formation

Question 29

How many free nuclear mitotic divisions take place in megaspore to form embryo sac?

Answer 29

3

Question 30

How many nuclei are present in embryo sac?

Answer 30

8

Question 31

How many nuclei in embryo sac are surrounded by cell walls?

Answer 31

6

Question 32

The nuclei which are not surrounded by cell wall are called ________ and form the large _________

Answer 32

Polar nuclei, central cell

Question 33

Polar nuclei are situated above the egg apparatus. | True/false

Answer 33

False | below

Question 34

egg apparatus constitues ________ and _____

Answer 34

1 Egg cell and 2 synergids

Question 35

egg apparatus is present on the chalazal end. | True/false

Answer 35

false | micropylar

Question 36

The cellular thickenings of synergids on their micropylar end are called_____

Answer 36

Filiform apparatus

Question 37

What is the role of cellular thickenings ?

Answer 37

guide the pollen tubes into the synergid

Question 38

3 cells of chalazal end are called_________

Answer 38

Antipodals

Question 39

A typical angiosperm embryo sac at maturity has ________ nuclei and ________ cells

Answer 39

8 , 7

Question 40

In nucellus , ________ differentiates

Answer 40

Archesporium

Question 41

Megaspore mother cell is a cell of ___________

Answer 41

Archesporium