HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

A patient was hospitalized with fever and chills. Merozoites were observed in her blood. What is your diagnosis?

Write the scientific name of the filarial worm that causes filariasis.

Write the symptoms of filariasis.

How is this disease transmitted?

Why do you think it is not possible to produce vaccine against 'common cold'?

Which of the following sentences are correct?

1. The offspring exhibit only parental combinations due to incomplete linkage
2. The linked genes exhibit some crossing over incomplete linkage
3. The separation of two linked genes is possible in incomplete linkage
4. Crossing over is absent in complete linkage

Due to incomplete linkage in maize, the ratio of parental and recombinants are

When two different genes came from the same parent they tend to remain together.

What is the name of this phenomenon?

Solidifying agent used in plant tissue culture is

What is the name of the process given below? Write its 4 types.

Write the various steps involved in cell suspension culture.

Based on the material used, how will you classify the culture technology? Explain it.

Write the protocol for artificial seed preparation.

Arrange the correct sequence of ecological hierarchy starting from lower to a higher level.

Pedogenesis refers to

Mycorrhiza promotes plant growth by

Which of the following plant has non-succulent xerophytic and thick leathery leaves with a waxy coating

What is Phytoremediation?

What is Albedo effect and write their effects?

Lichen is considered a good example of obligate mutualism. Explain.