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Biology NEET 2023 > XII: Chapter 1- Reproduction in organisms > Flashcards

XII: Chapter 1- Reproduction in organisms Flashcards

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1
Q

The life spans of organisms are correlated with their sizes. True or false?

A

False. The life spans of organisms are not correlated with their sizes.

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2
Q

Clones are only genetically similar. True/false?

A

False. Clones are both morphologically and genetically similar organisms.

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3
Q

How many layers does the cyst wall of amoeba have?

A

3

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4
Q

What are the many minute amoeba formed by multiple fission called?

A

Pseudopodiospores

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5
Q

How is dahlia cultivated vegitatively?

A

Through the nodes present on its modified stem

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6
Q

What grows from the nodes of tubers?

A

Roots and new plant

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7
Q

Do annual plants show clear cut vegetative, reproductive and senescent phases?

A

Yes

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8
Q

Do biennial plants show clear cut vegetative, reproductive and senescent phases?

A

Yes

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9
Q

Do perennial plants show clear cut vegetative, reproductive and senescent phases?

A

No

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10
Q

How many times does bamboo flower in its lifetime?

A

Once

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11
Q

Neelkuranji flowers once in every

A

12 years

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12
Q

What are responsible for changes between the three phases of life in animals and plants?

A

Hormone

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13
Q

Which term is used to denote bisexual condition in fungi?

A

Homothallous

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14
Q

Which term is used to denote bisexual condition in plants?

A

Monoecious

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15
Q

Are cucurbits monoecious or dioecious?

A

Monoecious

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16
Q

Is coconut monoecious or dioecious?

A

Monoecious

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17
Q

Is date palm monoecious or dioecious?

A

Dioecious

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18
Q

Which cells in diploid organisms undergo meiosis?

A

Meiocytes (gamete mother cell)

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19
Q

What is the universal event in life cycle of all sexually reproducing organism?

A

Formation of a zygote

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20
Q

What is the vital link that ensures the continuity of species between organisms of one generation and the next?

A

Zygote

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21
Q

What is the life span of Mayfly?

A

1 day

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22
Q

What is the unit of clone (of an organism)?

A

Ramet

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23
Q

What kind of binary fission is found in euglena?

A

Longitudinal

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24
Q

What kind of binary fission is found in paramoecium?

A

Transverse

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25
Q

What kind of binary fission is found in ceratium?

A

Oblique

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26
Q

What is the form of asexual reproduction in which multinucleated cell divides into many multinucleated daughter cells called?

A

Plasmotomy

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27
Q

How many nucleus are found in the daughter cells formed through plasmotomy?

A

Many

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28
Q

Plasmotomy is found in

A

Giant amoeba, opalina

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29
Q

Strobilation is a modified form of

A

Transverse fission

30
Q

What are ring like structures present in organisms undergoing strobilation called?

A

Ephyra

31
Q

What is the segmented body formed through strobilation called?

A

Strobila

32
Q

Strobilation is found in

A

Jelly fish, tape worm

33
Q

Internal budding is found in

A

Sponges

34
Q

Are zoospores formed in zoosporangium endogenously or exogenously?

A

Endogenously

35
Q

Do zoospores have cell wall?

A

No

36
Q

Chlamydospores are formed from

A

Hyphal cells

37
Q

In what conditions are oidia found?

A

Excess water condtion

38
Q

Oidia are formed in which organisms?

A

Fungi

39
Q

Regeneration was first discovered in which organism?

A

Hydra

40
Q

Who discovered regeneration in organisms?

A

Abraham Trembly

41
Q

What should be the size of the fragment of hydra so that it can undergo fragmentation?

A

> 1/6 mm

42
Q

Who coined the term apomyxis?

A

Winkler

43
Q

What is the vegatative propagule in artichoke?

A

Tuber

44
Q

What is the vegatative propaguale in banana?

A

Rhizome

45
Q

What is the modification of stem found in chrysanthemum?

A

Sucker

46
Q

What is the modification of stem found in mint?

A

Sucker

47
Q

What is the modification of stem found in strawberry?

A

Stolon

48
Q

What is the modification of stem found in pineapples?

A

Bulbils

49
Q

What is the modification of stem found in oxalis?

A

Bulbils

50
Q

Which cuttings are used for the horticulture of lemon?

A

Root cuttings

51
Q

Which cuttings are used for the horticulture of apple?

A

Root cuttings

52
Q

Which cuttings are used for the horticulture of strawberry?

A

Root cuttings

53
Q

Which cuttings are used for the horticulture of rose?

A

Stem cuttings

54
Q

Which cuttings are used for the horticulture of sugarcane?

A

Stem cuttings

55
Q

Which cuttings are used for the horticulture of begonia?

A

Leaf cuttings

56
Q

Which cuttings are used for the horticulture of bryophillum?

A

Leaf cuttings

57
Q

In a stem grafting, which part is the stock?

A

Root system

58
Q

Stem grafting cannot be performed in which angiosperms?

A

Monocots

59
Q

In bud grafting, the scion is the

A

Bud

60
Q

Which cuttings are used in layering?

A

Root cuttings

61
Q

In layering, advenitious roots are made to grow from

A

Soft stems (basal shoot branches)

62
Q

Mund layering is practised in which plants?

A

Apple, pear, grape, strawberry, cherry

63
Q

Air layering is practised in which plants?

A

Litchi, guava, orange

64
Q

Ovoviviparity is found in

A

Sharks, rays, snakes, fishes, and insects

65
Q

Kangaroos are

(1) Viviparous (2) Oviparous (3) Ovoviviparous (4) A distinct category

A

1) Viviparous

66
Q

What is the difference between the division of micronucleus and macronucleus in paramoecium?

A

Micronucleus divides by mitosis.

Macronucleus divides by amitosis.

67
Q

Complete parthenogenesis is found in

A

Rock lizard

68
Q

What is the type of parthenogenesis in which only males are produced called?

A

Arrhenotoky

69
Q

What is the type of parthenogenesis in which only females are produced called?

A

Thallotoky

70
Q

WHat type of parthenogenesis is found in honey bees?

A

Arrhenotoky

71
Q

What is endogamy?

A

Gametes which fuse belong to the same parent

Biology NEET 2023 (39 decks)

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