Secondary Growth in Plants NEET Questions Pdf - 1

Question: 1

Timber from heartwood is

(A) Less durable and more resistant to the attack of microorganism and insects

(B) Harder and less resistant to the attack of microorganism

(C) More durable and more resistant to the attack of microorganism and insects

(D) More fragile and resistant to the attack of insects

Question: 2

The wood formed early occur during

(A) Autumn season

(B) Winter season

(C) Summer season

(D) Spring season

Question: 3

When one wood is lighter in colour with a lower density, the other wood is darker with a higher density. They are

(A) Springwood and earlywood

(B) Heartwood and latewood

(C) Sapwood and springwood

(D) Springwood and Autumn wood

Question: 4

Which one of the tissue is formed in a stem from cells cut off by the cambium on its inner side?

(A) Campanian cells

(B) Sieve tubes

(C) Wood fibers

(D) Bast fibres

Question: 5

Duramen is present in

(A) Region of pericycle

(B) Outer region of secondary wood

(C) Part of sapwood

(D) Inner region of secondary wood