The Nervous System and Sense Organs — Biology STD 10 — Question

What is the effect of sexual reproduction?

Choose the Odd One Out

Complete the following sentence with appropriate Word The photoreceptor cells of the retina sensitive to colour are:

Stomata open during the day and close at night because :

Which of the following is a vestigial organs?

Cytokinesis involves

In hot, dry regions, plants adapt to reduce water loss. Cacti have thick water-storing stems and spiny leaves. Acacia trees have small, waxy leaves and deep roots. Succulents store water in thick leaves and have few stomata that open at night.
Which of the following is NOT an adaptation to reduce excessive transpiration?

The chemical used to test starch:

Erythroblastosis foetalis can occur when:

The letter ' H ' in abbreviation 'WHO' stands for