51. The secretion of droplets on the leaves of plants from the pores of plants is called –

1. Guttation
2. Photolysis
3. Photophosphorylation
4. Quenching

Option “1” is correct.
Guttation is the exudation of drops of xylem sap on the tips or edges of leaves of some vascular plants, such as grasses.
52. In plants food is stored in the form of starch, in animals it is generally stored in the form of –

1. Maltose
2. Glycogen
3. Sucrose
4. None of the above

Option “2” is correct.
Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in humans, animals, fungi, and bacteria.
53. DNA in a cell is a –

1. Carboxylic acid
2. Nucleic acid
3. Amino acid
4. Fatty acid

Option “2” is correct.
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things.
54. Which of the following is known as ‘grave yard’ of RBCs?

1. Small intestine
2. Bone marrow
3. Spleen
4. Appendix

Option “3” is correct.
Spleen is known as “grave yard” of RBCs
55. Which of the following organelles is called ‘atom bombs’?

1. Microtubules
2. Nucleolus
3. Golgi bodies
4. Lysosome

Option “4” is correct.
Lysosomes are called as “atom bombs”.
56. What is the pH of blood of a normal person?

1. 4.5-4.6
2. 6.45-6.55
3. 7.35-7.45
4. 8.25-8.35

Option “3” is correct.
Blood pH is regulated to stay within the narrow range osf 7.35 to 7.45, making it slightly basic.
57. Carbon monoxide poisoning affects mainly which one of the following?

1. Digestive activity
2. Liver functioning
3. Kidney functioning
4. Oxygen carrying capacity of blood

Option “4” is correct.
Carbon monoxide mainly causes adverse affects in humans by combining with haemoglobin to form carboxyhaemoglobin in the blood. This prevents haemoglobin from carrying oxygen to the tissues, effectively reducing the oxygen-carrying capacity of the blood, leading to hypoxia.
58. __________ are made up of sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem.

1. Xylem fibres
2. Xylem parenchyma
3. Phloem parenchyma
4. Phloem fibres

Option “4” is correct.
Phloem fibres are made up of sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem.
59. What type of a body plan does coelenterates, ctenophores and echinoderms have?

1. Annelida
2. Radial
3. Bilateral
4. Platyhelminthes

Option “2” is correct.
When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. Coelenterates, Ctenophores and Echinoderms have this kind of body plan.
60. In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), the terms Mangifera, Solanum and Panthera represent the higher level of?

1. Taxon
2. Taxonomic Hierarchy
3. Specific Epithet
4. Binomial Nomenclature

Option “1” is correct.
In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), the terms Mangifera, Solanum and Panthera represent the higher level of Taxon.
Pages: 1 2 3 4 5 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 32 33 34 35 36 37 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 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

16 thoughts on “Biology”

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top