Practice MCQ Questions and answers on Biology-GK

Volvox can be found in ponds, puddles, and bodies of still fresh water throughout the world. As autotrophs, they contribute to the production of oxygen and serve as food for a number of aquatic organisms, especially the microscopic invertebrates called rotifers.

Reserve food material in all the fungi is glycogen and oil but not starch.

Rhizobium is a genus of bacteria associated with the formation of root nodules on plants. These bacteria live in symbiosis with legumes. They take in nitrogen from the atmosphere and pass it on to the plant, allowing it to grow in soil low in nitrogen.

All of the following are true of neurons except that they are a very specialized form of connective tissue.

An electrical synapse is a mechanical and electrically conductive link between two neighboring neurons that is formed at a narrow gap between the pre- and postsynaptic neurons known as a gap junction.

The total number of pairs of Peripheral nerves in man are 43.

Medulla oblongata is a part of brain.

Acetylcholine is an organic chemical that functions in the brain and body of many types of animals as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells, such as neurons, muscle cells and gland cells.

Spinal nerve, in vertebrates, any one of many paired peripheral nerves that arise from the spinal cord. In humans there are 31 pairs of spinal nerve.

There are 8 bones in the human cranium.