ICSE Class 9 Seeds MCQ New Pattern
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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