Biology
Assertion (A): Darwin preferred pea plants for his experiments on genetics as it is a unisexual plant.
Reason (R): Pea plants are normally self-pollinated.
- (A) is true and (R) is false.
- (A) is false and (R) is true.
- Both (A) and (R) are true.
- Both (A) and (R) are false.
Related Questions
The number of chromosomes in the somatic cells of a human body before mitosis and after mitosis is:
- 23, 23
- 26, 46
- 23, 46
- 46, 46
The inorganic constituent of urine is:
- Ammonia
- Urea
- Creatinine
- Uric acid
Anup participated in a marathon race and felt dehydrated by the end of the race. The human body has mechanisms to conserve water and prevent dehydration. Which part of the nephron is primarily responsible for the reabsorption of water to prevent dehydration?
- Glomerulus
- Proximal Convoluted Tubule
- Loop of Henle
- Distal Convoluted Tubule
(a) 3
(b) 2 and 3
(c) 1, 2 and 3
(d) 2, 3 and 4
Which of the following process occurs only in meiosis and NOT in mitosis:
- Chromosome duplication
- Crossing over
- Cytokinesis
- Chromosome alignment