17 18 19 A 19 B 20 A 20 B 21 A 21 B 22 22 B 23 24 25 26 27 A 27 B 28 29 30 31 32

Lakhmir Singh & Manjit Kaur- Biology

Very Short Answer Type Questions-Pg-92

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Short Answer Type Questions-Pg-93

17 18 19 A 19 B 20 A 20 B 21 A 21 B 22 22 B 23 24 25 26 27 A 27 B 28 29 30 31 32

Long Answer Type Questions-Pg-94

33 A 33 B 33 C 34 A 34 B 34 C 35 A 35 B 35 C 36 A 36 B 36 C 37 A 37 B 37 C

Multiple Choice Questions (MCQs)-Pg-94

38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

Questions Based on High Order Thinking Skills (HOTS)-Pg-96

69 70 71 72 73 74 75 76 77

Very Short Answer Type Questions-Pg-115

1 2 3 4 5 A 5 B 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Short Answer Type Questions-Pg-116

32 A 32 B 33 A 33 B 34 A 34 B 34 C 35 A 35 B 36 A 36 B 37 A 37 B 38 A 38 B 39 A 39 B 40 41 42 43 44 45 46 47 48 49 50 51 52

Long Answer Type Questions-Pg-117

53 A 53 B 53 C 53 D 54 A 54 B 54 C 55 A 55 B 55 C 56 A 56 B 57 A 57 B 57 C 58 A 58 B 58 C 58 D 58 E

Multiple Choice Questions (MCQs)-Pg-117

59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

Questions Based on High Order Thinking Skills (HOTS)-Pg-120

100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115

Q. 19 A5.0( 6 Votes )

What does a root do in response to gravity? What is this phenomenon known as?

Class 10th Lakhmir Singh & Manjit Kaur- Biology 2. Control and Coordination

Answer :

Positive geotropism is the process in which the roots of plants bend downwards in the direction of gravity.

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RELATED QUESTIONS :

Following are the two examples of plant movement.

(i) Which stimulus is common for movement in both the cases?

(ii) Does the movement take place towards the point where the stimulus is received? Mention separately for both plants.

(iii) Give one reason for the movement is each case.

All In One Science

A plant in the laboratory is given an increased dose of a hormone, which promotes the development of seedless fruits. Identify the hormone and write its other two functions.

All In One Science

How is geotropism necessary for the plant?

All In One Science

Do organisms have hormones, who control their directional growth? Justify.

All In One Science

How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.

Lakhmir Singh & Manjit Kaur- Biology