181. ___________ being a higher category, is the assemblage of families which exhibit a few similar characters.

1. Order
2. Species
3. Genus
4. Class

Option “1” is correct.
Order being a higher category, is the assemblage of families which exhibit a few similar characters
182. Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called?

1. Zoospores
2. Anisogamous
3. Isogamous
4. Oogamous

Option “2” is correct.
Anisogamy (also called heterogamy) is the form of sexual reproduction that involves the union or fusion of two gametes, which differ in size and/or form. Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called Anisogamous.
183. The hormone that stimulates heart beat is-

1. Thyroxine
2. Gastrin
3. Glycogen
4. Dopamine

Option “1” is correct.
Thyroxine harmone can increase the heart beat, it’s principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body.
184. The study of relation of animals and plants to their surroundings is called__________

1. Ecology
2. Ethrology
3. Genealogy
4. Iconology

Option “1” is correct.
Ecology is the study of the relationships between plants, animals, people, and their environment, and the balances between these relationships.
185. Which cell disorder in our body is responsible for colour blindness?

1. WBC
2. Cone cell
3. Rod Cell
4. Neuron

Option “2” is correct.
The retina of the eye has two types of light sensitive cells called rods and cones, both are found in the retina. Rods work in low light conditions to help night vision, but cones work in daylight and are responsible for colour discrimination.
186. Blood is red in colour due to the presence of __________ .

1. Cytochrome
2. Chlorophyll
3. Hemocyanin
4. Haemoglobin

Option “4” is correct.
Blood is red in colour due to the presence of Haemoglobin.
187. Which is used as an Air pollution indicator?

1. Algae
2. Fungi
3. Bacteria
4. Lichens

Option “4” is correct.
Lichens are widely used as environmental indicators or bio-indicators. Because of their sensitivity lichens are particularly significant biological indicators of air pollution.
188. The study of mountains is known as –

1. Oncology
2. Lithology
3. Orology
4. Ornithology

Option “3” is correct.
The study or science of mountains and their formation is called Orology.
189. An example of hormone is –

1. Cytosine
2. Renin
3. Oxytocin
4. Peprin

Option “3” is correct.
Oxytocin is an hormone that is normally produced in the hypothalamus and stored in the posterior pituitary gland.
190. Amino acids are required for the synthesis of:

1. Alkaloids
2. Lipids
3. Proteins
4. Carbohydrates

Option “3” is correct.
Amino acids are required for the synthesis of body protein and other important nitrogen-containing compounds. Amino acids are constituents of protein and act as precursors for many co-enzymes, hormones, nucleic acid, etc.
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48 thoughts on “Biology”

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