Cell The Unit of Life — BIOLOGY STD 11 Science — Question

Who confirmed the release of a volatile substance from ripening oranges, that could hasten ripening of bananas? What is that substance named as?

Write one diagnostic feature of Fabaceae.

What are those animals that excrete urea called?

Heart failure is also called congestive heart failure. Why?

What do you understand by direct and indirect development?

When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Euglena is both an autotroph and a heterotroph. Justify.

Name two substances secreted into the filtrate directly.

M phase begins with the division of what?

Give an example of cartilaginous joints.