Mineral Nutrition — BIOLOGY STD 11 Science — Question

What term is given to:

1. The centriole-like structure from which a cilium/ flagellum emerges?
2. The core of a cilium/ flagellum?

Name the infection agent that causes potato spindle tuber.

What are adventitious roots?

How flowering plants help pollinators to attract towards them?

What is the main function of smooth endoplasmic reticulum?

Name the site in our body, where:

1. Dense irregular connective tissue is present.
2. Blood cells are produced.

Name (a) the mineral ion that activates the critical enzymes of photosynthetic carbon fixation and (b) the element that is required by plants in the greatest amount.

Give a specific scientific term for the following statements:
(a) The point at which two daughter half- chromosomes/daughter chromatids are joined together.
(b) Nuclear division.
(c) The time interval between two successive mitotic divisions.
(d) A process of cell division in which the number of chromosomes is reduced to half, which is followed by cytoplasmic division.
(e) That stage of the cell cycle in which mainly synthesis of proteins and RNA takes place.

Explain the significance of saltatory conduction.

How many molecules of ATP are needed in the regeneration step of Calvin cycle to form one molecule of glucose?