Health: Causes of Diseases — BIOLOGY STD 9 — Question

Deficiency of which vitamin causes night-blindness?

Name the part of the cell concerned with the following :
Transmission of hereditary characters from parents to offspring

Name the following :
The layer of the endosperm of maize rich in protein.

Give the name of the plant that reproduces vegetatively by: Bulbils

What kind of waste causes viral and bacterial disease transmission?

Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Grasshopper-Wings, trachea, proboscis

Correct the spellings: HLC

Sometimes the potatoes kept in a basket during the late rainy season start giving out small shoots. Would you call it germination? Give reasons in support of your answer.

Name the following: Innermost germinative layer of the epidermis.

Explain briefly, the role of the following health aids:
Antiseptics