Biology MCQ Question and Answer
Biology MCQ Question and Answer
161. Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of
- hormones
- enzymes
- proteins
- vitamins
162. On which of the following plants did Gregor Mendal perform his classical experiment?
- Gram
- Maize
- Pea
- Wheat
165. Mutation is
- a factor responsible for plant growth
- a change which affects the offspring of F2 generation only
- a change that is inherited
- a change which affects the parents
166. Ptyalin is an enzyme produced in the
- salivary glands
- pituitary glands
- thyroid glands
- pancreas
167. Norepinephrine increases
- respiration
- urine production
- saliva production
- blood pressure
168. Our major foods, fibres, spices, fruits and beverage crops are
- flowering plants
- gymnosperms plants
- pteridophytes
- bryophytes
169. Most of the red, blue and purple colours of plants are due to a pigment called
- anthocyanin
- carotene
- chlorophyll
- xanthophylls