Cook cambium and vascular cambium are :

• parts of secondary xylem and phloem

• parts of pericycle

• lateral meristems

• apical meristems

Growth rings are formed due to activity of :

• extrastelar cambium

• intrastelar cambium

• interstelar cambium

• both 'b' and 'c'

P-proteins belong to :

• xylem parenchyma

• trichomes

• sieve tube elements

• tracheids and vessels

Quiescent centre is found in root apex and acts as

• permanent source of active initiates

• reservoir of resistant cells

• reservoir of passive cells to form new root apex if root apex is damaged/ killed

• all of the above

Which is present in monocot flowers?

• Sepals

• Petals

• Tepals

• None of these

Largest number of chloroplast is found in :

• palisade tissue

• spongy tissue

• transfusion tissue

• bundle sheath cells

Which type of meristems allow the fallen stems of cereals/ grasses to become erect?

• Apical meristem

• Lateral meristem

• Intercalary meristem

• Secondary meristem

Phytotron is :

• a controlled condition chamber for tissue

• leaf culture process

• special culture of plants

• root culture process

Passage cells are found in

• dicot stem

• monocot root

• monocot stem

• all of these

An open collateral bundle is one in which :

• xylem and phloem are seprated by cambium;

• xylem and phloem lie side by side

• cambium occurs on the out side of bundle

• cambium does not occur in the bundle