Enhancement of Food Production — BIOLOGY STD 12 Science — Question

Name the following : Name the plasma proteins involved in the process of blood clotting.

Bottled fruit juices are clearer as compared to those at home. Explain.

The following statements (i), (ii) and (iii) seem to describe the waterpollinated submerged plants. Which one of these statements is incorrect?

1. The flowers do not produce nectar.
2. The pollen grains have mucilaginous covering.
3. The brightly coloured female flowers have long stalk to reach the surface.

Name the following: Ability of plant to form different kinds of structures.

What is electrocardiograph?

Give an example where:

1. Males are XO.
2. Females are ZW.

Name the different structural genes in sequence of lac operon.

Trace the route of Sporozoite of Plasmodium, when it enters the human body through the bite of female Anopheles, till its entry into RBCs.

Mention the combination(s) of sex chromosomes in a male and a female bird.

All the primary productivity is not available to a herbivore. Give one reason.