31.

P-proteins belong to :

• xylem parenchyma

• trichomes

• sieve tube elements

• tracheids and vessels

The wall of bacteria is consists of :

• N-acetyl glucosamine

• N-acetyl muramic acid

• both (a) and (b)

• cellulose

Which enzyme is most specific ?

• Trypsin

• Pepsin

• Sucrose

• Nuclease

The organelles, those take part in photorespiration are :

• chloroplast and mitochondria

• chloroplast, mitochondria and peroxisome

• mitochondria and peroxisome

• mitochondria only

Pneumatophores are meant for :

• respiration

• anchorage

• protection

• nutrition

Mosses are attached to substratum by :

• roots

• capsule

• rhizoids

• cistron

Mark the correct sequence of layers found in root anatomy:

• Epiblema, cortex, endodermis, pericycle

• Cortex, epiblema, pericycle, endodermis

• Epiblema, cortex, pericycle, endodermis

• Cortex, epiblema, endodermis, epidermis

Organs which differ in origin but perform similar functions :

• analogous

• homologous

• vestigial

• any of the above

Sequence of DNA (Non- coding) is known as:

• exon

• intron

• cistron

• none

How many sperms are formed by four primary spermatocyte :

• 1

• 4

• 16

• 32