Practice MCQ Questions and answers on Biology-GK

Sickle-cell anaemia is due to genes.

The word 'antibiotics' was first used over 30 years later by the Ukrainian-American inventor and microbiologist Selman Waksman, who in his lifetime discovered over 20 antibiotics.

Antibody is produced by B-lymphocytes.

In man Suinea worm cause abscesses on the skin of arms or legs

Malaria killed more peoples than any other death causing factors including all other diseases, natural calamities and wars.

Arthropoda is by far the largest phylum in the animal kingdom. It includes insects, lobsters, mites, crabs etc. A recent estimate of the number of arthropods on Earth today is 3.7 million species.

Notochord is stiff rod of special cells surrounded by connective tissue present in the mid-dorsal region and appears in the embryos of all chordates.

Fish, frog and lizard all are cold blooded.

The vascular plants, or tracheophytes, are plants that have specialized tissues for conducting water, minerals, and photosynthetic products through the plant. They include the ferns, clubmosses, horsetails, flowering plants, conifers and other gymnosperms. They are often called the higher plants or the seed plants.

A genus can best be defined as a taxon composed of one or more species and a classification level lying below family.