STD 11 - 18. Neural control and coordination — BIOLOGY STD 11 Science — Question

Crossing-over occurs in the

When light falls on a part of the plant, a hormone called .......... which is synthesized at the tip of the shoot helps the cells to grow longer?

Which of the following group of characters is present in all chordates in some or other stage in their life

Among the following is a freeliving flatworm

Mesogloea of Coelenterata contains

The plant group that produces spores and embryo but lacks vascular tissues and seeds is:

A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately, which one of the blood groups readily available in the hospital will be safe for transfusion?

An all out sprint will not continue for more than 40 seconds because:

In monocot stem, vascular bundles are.