The Seed Structure and Germination (Multiple Choice Questions and Answers)

The Seed Structure and Germination

Multiple Choice Questions and Answers

1. If cotyledons are brought above the soil, the germination is

(a) hypogeal

(b) epigeal

(c) vivipary

(d) none of these

Answer: (b) epigeal

2. The micropyle in a seed develop helps the entry of water

(a) water

(b) pollen tube

(c) male gamete

(d) none

Answer: (a) water

3. The position of shoot apex in monocot embryo is

(a) basal

(b) lateral

(c) terminal

(d) subterminal

Answer: (b) lateral

4. Scutellum is a

(a) endosperm of gymnosperms

(b) shield shaped cotyledons of monocots

(c) protective covering of radicle

(d) protective covering of plumule

Answer: (b) shield shaped cotyledons of monocots

5. Vivipary is the characteristic feature of

(a) hydrophytes

(b) xerophytes

(c) halophytes

(d) mesophytes

Answer: (c) halophytes

6. The tegmen of seed develops from

(a) perisperm

(b) funicle

(c) inner integument

(d) outer integument

Answer: (c) inner integument

7. Seed may be defined as

(a) ripened ovule

(b) fertilized ovary

(c) the gynoecium

(d) embryo

Answer: (a) ripened ovule

8. Embryonal axis is known as

(a) plumule

(b) hypocotyl

(c) epicotyl

(d) tigellum

Answer: (d) tigellum

9. The reserve food material in castor seed mostly occurs in the form of

(a) carbohydrates

(b) proteins

(c) oil

(d) sugar

Answer: (c) oil

10. Caruncle in castor seeds is

(a) the micropylar outgrowth of integument

(b) the endosperm

(c) shield shaped cotyledon

(d) extension of raphe

Answer: (a) the micropylar outgrowth of integument

11. If moistened seeds are placed in the following flasks, they would germinate best in the flask containing

(a) carbon dioxide

(b) oxygen

(c) nitrogen

(d) water

Answer: (b) oxygen

12. Vivipary in plants means

(a) germination of seeds in the crevices of stem where some soil is deposited

(b) development of pea nut fruits after the fertilization

(c) organisation of several shoots

(d) germination of seeds inside the fruit while it is still on the parent tree.

Answer: (d) germination of seeds inside the fruit while it is still on the parent tree.

13. The plant whose seeds are known to have the longest viability period is

(a) Carica papaya

(b) Nelumbo nucifera

(c) Zizyphus mauritiana

(d) Triticum vulgare

Answer: (b) Nelumbo nucifera

14. Removal of seed coat in dormant seeds by mechanical methods is called

(a) emasculation

(b) separation

(c) scarification

(d) vernalization

Answer: (c) scarification

15. When the seeds show hypogeal germination, the part that pushes the cotyledons into the soil is

(a) epicotyl

(b) hypocotyl

(c) plumule

(d) radical

Answer: (a) epicotyl

16. Hypogeal germination is found in

(a) bean

(b) maize

(c) Rhizophora

(d) Cucurbita

Answer: (b) maize

17. Protective layer of radicle during seed germination and endosperm formation is

(a) coleoptile

(b) coleorrhiza

(c) suspensor

(d) plumule

Answer: (b) coleorrhiza

18. When seed germinates while the fruit is attached to the parent plant, is called

(a) apomixes

(b) vivipary

(c) parthenocarpy

(d) parthenogenesis

Answer: (b) vivipary

19. Membranous leafy cotyledons are found in the seeds of

(a) castor

(b) bean

(c) gram

(d) pea

Answer: (a) castor

20. Exalbuminous seeds are found in

(a) Ricinus communis

(b) Cicer arietinum

(c) Tamarindus indica

(d) both b and c

Answer: (d) both b and c

21. A seed is

(a) developed ovule

(b) fertilized and developed ovule

(c) developed ovary

(d) fertilized and developed ovary

Answer: (b) fertilized and developed ovule

22. Hilum of seed is

(a) scar of micropyle

(b) scar of funiculus

(c) area through which pollen tube enters the ovule

(d) a grandular region which attracts pollen tube

Answer: (b) scar of funiculus

23. Tigellum is

(a) embryonic axis

(b) embryonic root

(c) embryonic shoot

(d) embryonic leaf

Answer: (a) embryonic axis

24. In exalbuminous seeds, the food is generally stored in

(a) cotyledons

(b) endosperm

(c) testa

(d) hypocotyl

Answer: (a) cotyledons

25. Integumentary outgrowth present over the micropyle of castor seed is

(a) chalaza

(b) caruncle

(c) aril

(d) wing

Answer: (b) caruncle

26. The remains of nucellus present in the seed constitute

(a) endosperm

(b) endocarp

(c) perisperm

(d) aril

Answer: (c) perisperm

27. In endospermic seeds, the cotyledons are

(a) leathery

(b) fleshy

(c) fleshy and green

(d) papery

Answer: (d) papery

28. Aleurone layer is

(a) outer layer of scutellum

(b) layer of pericarp specialised in absorption of water

(c) layer present in ovule that guides pollen tube

(d) layer present just outside endosperm and having protein grains

Answer: (d) layer present just outside endosperm and having protein grains

29. Coleorrhiza is

(a) covering of radicle

(b) covering of plumule

(c) plumule and rudimentary sheath

(d) radical and root cap

Answer: (a) covering of radicle

30. The function of caruncle is to

(a) protect the radicle and embryo

(b) check the entry of pathogen through micropyle

(c) protect against mechanical injury

(d) absorb water and its inward transfer through micropyle

Answer: (d) absorb water and its inward transfer through micropyle

31. Which of the following seeds is without hilum and micropyle?

(a) castor

(b) gram

(c) maize

(d) pea

Answer: (c) maize

32. The most appropriate definition of a seed in terms of its homologous organs found in spore producing land plants is

(a) a seed is an integumented sporangium with a single functional spore

(b) a seed is an integumented indehiscent megasporangium with a functional megaspore

(c) a seed is an integumented gymnosporangium

(d) a seed is an integumented bud containing an egg

Answer: (b) a seed is an integumented indehiscent megasporangium with a functional megaspore

33. Which of the following has shortest longevity of seeds?

(a) Oryza sativa

(b) Hevea brasiliensis

(c) Lupinus

(d) Nelumbo

Answer: (b) Hevea brasiliensis

34. By which of the following processes the seed absorbs ample of water and dormancy is overcome?

(a) vernalization

(b) scarification

(c) stratification

(d) devernalization

Answer: (b) scarification

35. The aleurone layer in maize grains is especially rich in

(a) proteins

(b) starch

(c) lipids

(d) auxins

Answer: (a) proteins

36. In cereal grain, single cotyledon is represented by

(a) coleoptile

(b) coleorrhiza

(c) scutellum

(d) prophyll

Answer: (c) scutellum

37. Find the correct answers: for germination of angiospermic seeds

(a) on hydration the seed germination showing increased enzyme activity

(b) respiration rate of germination seeds increases along with increased enzymatic activity

(c) increase in respiratory rate continue till senescence

(d) rate of enzymatic activity increases

Answer: (b) respiration rate of germination seeds increases along with increased enzymatic activity

38. Embryo axis above the cotyledon is known as

(a) hypocotyl

(b) funicle

(c) epicotyl

(d) raphe

Answer: (c) epicotyl

39. An example of a seed with endosperm, perisperm and caruncle is

(a) castor

(b) coffee

(c) lily

(d) cotton

Answer: (a) castor

40. Non endospermic seeds are found in

(a) barley

(b) castor

(c) bean

(d) wheat

Answer: (c) bean

41. In hypogeal germination plumule comes out of ground due to elongation of

(a) hypocotyl

(b) epicotyl

(c) cotyledons

(d) both a and b

Answer: (b) epicotyl

42. In monocotyledonous seeds the endosperm is surrounded by a layer called

(a) aleurone layer

(b) pericarp

(c) coleorrhiza

(d) none of these

Answer: (a) aleurone layer

43. A soft tissue present in the micropylar region of the castor seed is known as

(a) aril

(b) caruncle

(c) wing

(d) chalaza

Answer: (b) caruncle

44. In monocotyledonous seeds, the scutellum represents the

(a) cotyledon

(b) endosperm

(c) plumule

(d) none of these

Answer (a) cotyledon

45. The ability of mature seeds to germinate is known as

(a) viability

(b) seed dormancy

(c) both a and b

(d) none

Answer: (a) viability

46. Mangrove plants show……germination

(a) epigeal

(b) hypogeal

(c) viviparous

(d) none

Answer: (c) viviparous

47. ………tissues makes up the embryo of a seed


(b) meristematic

(c) vascular

(d) sclerenchymatous

Answer: (b) meristematic

48. Arabidopsis has been used to demonstrate the role of ………. in seed dormancy

(a) ABA

(b) GA

(c) Ehylene

(d) Cytokinin

Answer: (a) ABA

49. Viviparous germination is found in

(a) Rhizophora

(b) Heritiera

(c) Ceriops

(d) All of these

Answer: (d)

50. The shield-shaped cotyledon in grains is known as

(a) Scutellum

(b) Plumule

(c) Radicle

(d) None

Answer: (a) Scutellum