Answer:
d. Gemmulation involves providing a resistant layer of cells for a capsule; fragmentation is merely breaking off chunks of tissue to grow a new organism
Explanation:
Gemmulation and fragmentation are both a type of asexual reproduction. Gemmulation starts when mass of cell which is produced asexually that are capable of producing a new organism.
These mass of cells gets surrounded by a protective covering which provide a resistant layer of cell and the structure is called gemmule.
In fragmentation, the parent body part breaks from the whole body and gives rise to a new organism. For example in planaria. So the correct answer is d.
It performs all functions for the organism.
Hope this helps!
Answer:
Because the gametes implemented in fertilisation are haploid in nature, in the case of humans, mature gametes contain 23 chromosomes instead of 46 which will then combine with another parents' 23 chromosomes during fertilisation, i.e: 23 (dad) + 23 (mom) = 46 (zygote)
Explanation:
A regular somatic cell has 46 chromosomes, 2n, 2 alleles but the gametes have 23 chromomes, n, 1 allele. The usual significance of this is so that there is diversity in the offspring and the offspring can gain characteristics (bad or good) from both parents.
Answer:
If one wants to estimate the cost of living of an individual, then the factors such as salary, age, marital status, etc. are independent variables, while the cost of living of a person is highly dependent on such factors. Therefore, they are designated as the dependent variable.
Answer:
Sweating is under the control of the sympathetic nervous system, which orchestrates the body's reaction to stressful situations and emergencies. The sympathetic nervous system activates the sweat glands through the chemical messenger acetylcholine.
