Maharashtra State Board Question Bank 2021- Biology Chapter 1 - Reproduction in Lower and Higher Plants

 सूचना

1. फक्त विद्यार्थ्यांना प्रश्नप्रकारांचा सराव करून देण्यासाठीच

2. सदर प्रश्नसंचातील प्रश्न बोर्डाच्या प्रश्नपशिकेत येतीलच असे नाही याची नोंद घ्यावी

1 The outer layer of pollen grain is thick and made up of complex ,nonbiodegradable substance called as………………….

A. lignin

B. cellulose

C. pectin

D. Sporopollenin

2 Sporoderm is made up of ………….

A. exosporium and endosporium

B. outer integuments and inner integument

C. testa and tegmen

D. exine and intine

3 The number of meiotic and mitotic divisions necessary for development of female gametophyte in angiosperms is...

A. 1 meiosis and 2 mitosis

B. 1 mitosis and 3 meiosis

C. 1 meiosis and 1 mitosis

D. 1 meiosis and 3 mitosis.

4 Identify the odd one with respect to pollinating agent.

A. Baobab

B. Bottle brush

C. Kadamb

D. Sausage

5 In vitro pollen germination and pollen tube elongation can be induced by----- -

A. boric acid

B. glucose

C. lactose

D. sucrose

6 Self-incompatibility is found in flowers of plants…..

A. Calotropis

B. maize

C. Thea

D. Gloriosa

7 Porogamy refers to entry of pollen tube through…..

A. integuments

B. chalaza

C. micropyle

D. stigma

8 ……… is an example of helobial endosperm.

A. Adoxa

B. coconut

C. Asphodelus

D. sunflower

9 The single shield shaped cotyledon in monocot seed is known as ……

A. coleoptile

B. scutellum

C. aleurone layer

D. perisperm

10. The example of dicot endospermic seed is ….

A. castor

B. pea

C. mango

D. bean

Single sentence answers Key word in answer

1 . Why anther is called as tetrasporangiate structure?

Presence of four pollen sacs in dithecus anther (3)

2 At which stage pollen grains are shed from the anther in Angiosperms?

Bicelled stage (4)

3 What is hilum with respect to ovule? Place of

attachment of funiculus with main body of ovule. ( 4) 

4 What is protandry? Condition where androecium matures earlier the gynoecium ( 9)

5 Name any one plant in which double fertilization was discovered?

Fritillaria or Lilium ( 10)

6 Why fertilization process in angiosperms is called as double fertilization?

Both male gametes are used. ( 10)

7 Which is the most common type of endosperm in angiospermic families? 

Nuclear type (11)

8 What is the role of suspensor during the development of embryo?

Pushes embryo into the endosperm ( 12)

9 What is adventive polyembryony? 

Embryo develops from somatic cells or integuments (14)

10 Name the hormone produced by unfertilised ovary responsible for enlargement of ovary into fruit.

Indole -3 acetic acid / auxins ( 15)

2 marks

1 Draw a well labelled diagram of T.S. anther.

Four correct labels 

½ mark each

1 3

2 Describe the structure of pollen grain. Wall layers, ploidy and fate of pollen grain. 

Formation through meiosis. 

Each point ½ mark

1 3

3 Draw a well labelled diagram of male gametophyte of angiosperms.

Diagram-1 

mark,

Any two correct labels (male gamete, tube nucleus and pollen tube) ½

mark each.

1 4

4 Describe the structure of female gametophyte of angiosperms.

4 points 

½ mark each

1 5

5 Mention various adaptations for wind pollination.

Any four points

½, mark each.

1 6

6 What are the different adaptations shown by bird pollinated flowers?

Any four points

½ mark each

1 8

7 Explain heterostyly and herkogamy with suitable example.

Meaning ½ mark and

example ½ mark each.

1 9

8 Give the significance of double fertilization.

Any four points,

½ mark each

1 10 & 11

9 Mention significance of fruit and seed formation.

Two points 2

marks

1 14

10 Give an account of polyembryony. 

Meaning-1/2 mark 

Types ½ mark each

Reason-1/2 mark

1 15

3 marks

1 Describe internal structure of anther 

(diagram is not expected).

Three wall layers -1/2 mark each

Tapetumstructure and function-1 marks

Pollen mother cell nature/function- 1/2 mark 1 3

2 Explain the development of male gametophyte in angiosperms 

(diagram is not expected).

Development inside anther-1 and ½ marks

Development over stigma-1 and 1/1 marks

1 4

3 Explain water pollination in detail with its types.

Definition-1 mark

Each type with example-1 mark

1 7

4 Give an account of any two biotic agents for pollination along with their adaptations.

Three adaptations for each agency- 1 and ½ mark 

17/8

5 Explain any two contrivances or outbreeding devices for pollination.

1 and ½ marks for correct contrivances. 

1 8/9

6 Describe the process of fertilization in angiosperms with the help of diagram.

Process – 2 marks

Diagram-1 mark

1 10

7 Write a note on different types of endosperms in angiosperms.

Each type -1 mark

1 11

8 Describe the development of dicot embryo in flowering plants.

six sequential stages carrying ½ mark each

1 11/12

9 Draw a well labelled diagram of monocot seed you have studied.

Any six labels- 1/2 mark each

1 13

10 Explain various categories of apomixis. 

1 mark each type

1 14

4 marks

1 Describe the structure of anatropus ovule with the help of labelled diagram.

Structure -2 marks

Diagram with four correct

labels -2 marks

1 4

2 Describe the development of female gametophyte of angiosperms with the help of diagram.

Process upto 7 celled 8 nucleate stage -2 marks

Sequential diagrams -2 marks

1 5

3 Give an account of various abiotic agencies used in pollination along with their adaptations for pollination.

2 marks for each

agency

1 6/7

4 Give an account of pollen pistil interaction in detail.

Meaning- 1 mark

Recognition of pollen and germination – 1 mark

significance- 1 mark

1 9

5 Describe the process of double fertilization in angiosperms and add a note on its significance.

Process- 2 marks

Significance ( two points) -2 marks

1 10/11