Answer:
Genetic variability. (Ans B)
Explanation:
Sexual reproduction is defined as the development of the new gamete, and it involves the characters of both parents, and showing the new characters from the fusion of male, and female gametes. Some characteristic of sexual reproduction are:
1) It is biparental in nature.
2) Gametes are always synthesized.
3) Fertilization occurs.
4) Meiosis and mitosis both involves.
5) New gamete genetically different from parents.
6) Multiplication is not so rapid.
Cellulose belongs to carbohydrates.
Cellulose is classified as a carbohydrate, a polysaccharide, as they are formed of the glucose monomers chain. It is the prime component in the walls of the cells of plants, assisting the plants to remain upright and stiff. Humans cannot digest cellulose due to the absence of cellulase, however, it is essential in the diet as fiber.
However, the animals like sheep, cows, and horses can digest cellulose that is why they can acquire nutrients and energy they require from the grass.
Answer:
A wide range of mental conditions that affects the mood of the person, behavior of the person and thinking of the person is called as mental disorder.
Example: Clinical depression: It is characterized by constantly a depressed mood or loss of interest in the activities causing an impairment in the daily life of the person.
The mental illness is also a type of mental disorder which is characterized by a sad mood and depressed mood for a longer period of time.
Example: Schizophrenia
Answer:
bioluminescence : production and emission of light by living organism which occurs through a chemical reaction.
Explanation:
( can be found in marine animals, fungi, bacteria, and terrestrial arthropod)
