Morphology of Flowering Plants — Biology STD 11 Science — Question

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

Consider the following statements:
1. Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.
2. A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the correct option.

Which of the following features is used to identify a male cockroach from a female cockroach?

In a hierarchical system of plant classification, which one of the following taxonomic ranks generally ends in 'aceae'?

Which of the following is a photochemical reaction?

Algae are chlorophyll bearing , simple thalloid, avascular plants. They are usually aquatic. Choose one algae which is used commercially :

According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?

Which of the following taxonomic rank contain organisms most similar to one another ?

Which of the following is a gametophyte free living structure formed in pteridophytes.

Which one of the following has least similar characters?