In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?

A. 2:2
B. 1:3
C. 4:1
D. 3:1

Answer

Correct Answer: B. 1:3

Detailed About MCQs

At least one of the spores develop into haploid female gametophytes thus making the ratio of functional and degenerate megaspores is 1:3. Out of the four, three megaspores degenrate.

The Lanthanoids are part of which block of elements in the periodic table?

A. p-block
B. s-block
C. d-block
D. f-block

Answer

Correct Answer: D. f-block

Detailed About MCQs

Lanthanoids form part of the series of chemical elements comprising the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through the lutetium. They are a part of the f-block of elements in the periodic table.