Plant Tissues and Anatomy — Biology STD 11 Science — Question

In gymnosperms and angiosperms _______ is much reduced.

Select the CORRECT sequence of organs in the alimentary canal of cockroach starting from mouth:

A number of algae are edible and commercially available as food sources. There are three main classes of algae. Choose the odd one:

In _________ , the terminal three leaflet get modified into three stiff leaf hooks.

Placentation in which ovules develop on the inner wall of the ovary or in peripheral part is:

How many divisions are required to produce 128 gametes?

Which of the following is made up of dead cell?

Plant preservation centre in which the collected plants are preserved as dry specimens, according to any recognised system of classification is called :

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

Chromosome number of a cell is almost doubled up during _______ .