Evolution — BIOLOGY STD 12 Science — Question

Hugo de Vries gave the mutation theory. Name the plant he worked on.

Mention the parts of the human body affected by pneumonia and common cold. Write the names of the causative agents of these diseases.

When does a tumour called malignant?

Multiple allelism can be investigated only in populations. Justify.

Write name of one hormone secreted by glandular structure of ruptured follicle cells.

Genetic engineering has been successfully used for producing.

What type of placenta is found in human?

Write the percentage of the pea plants that would be homozygous recessive in the F, generation, when tall F, heterozygous pea plants are selfed.

Name the enzyme and state its property that is responsible for Continuous and discontinuous replication of the two strands of a DNA molecule.

Mark the odd one in the following groups.
Clostridium, Lactobacillus, Aspergillus, Acetobacter.