Answer: Insects create the biological foundation for all terrestrial ecosystems. They cycle nutrients, pollinate plants, disperse seeds, maintain soil structure and fertility, control populations of other organisms, and provide a major food source for other taxa
Facts about insects: Insects are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body, three pairs of jointed legs, compound eyes and one pair of antennae.
The leaf support should actually be water. if in hot and dry weather, the leaf loss so much water that will make the plant cells flaccid and wilt.
Question is incomplete. Complete question has been attached.
Answer:
Hemophilia is an X-linked recessive disease. Let the normal allele be represented as XH and the mutant allele be represented as Xh. Here,
hemophilic male = XhY
hemophilic female = XhXh
When XhY X XhXh the punnett square will be as follows:
Xh Y
Xh XhXh XhY
Xh XhXh XhY
The entire progeny will be hemophilic since only Xh allele was passed on by both the parents.
Answer:
Hypothalamic-pituitary-adrenal axis (HPA axis)
Explanation:
- The three-stage process describing the physiological changes that take place in the body when it is under stress is known as general adaptation syndrome (GAS).
- The model describing the three-stage process was given by the scientist Hans Selye.
- According to this model, the responses in the body that occur during stress is regulated by the Hypothalamic-pituitary-adrenal axis (HPA axis) where the brain senses the stress and then the signals travel from the hypothalamus to the pituitary and finally the body releases cortisol from adrenal glands that contributes to the various changes.
It’s a nerve cell. A neuron/nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. It is the main component of nervous tissue in all animals except sponges and placozoa. It had a nucleus that contains genes and contain cytoplasm, mitochondria and other organelles.
