If a ring of bark and phloem is removed from a stem, the

A. plant dies immediately

B. plant dies after two days

C. movement of food is not affected

D. movement of minerals is hardly affected

Transpiration can be measured with a

A. photometer

B. hygrometer

C. potometer

D. barometer

Excretory products responsible for the red, purple and blue colours of flowers are called

A. alkaloid

B. tannins

C. anthocyanins

D. resins

Etiolation is caused by the influence of

A. minerals salt

B. water

C. carbondioxide

D. light

Muscles are indirectly attached to bones by means of

A. ligaments

B. membranes

C. tendons

D. sutures

During mammalian embryo development, large amounts of oestrogen and progesterone are produced in the

A. umbilical cord

B. amnion

C. placenta

D. amniotic fluid

Fruits which develop without fertilization are described as

A. simple

B. pathencorpic

C. aggregate

D. compound

The type of placentation shown in the figure above is a

A. parietal

B. marginal

C. axile

D. free-central

The elephant grass is propagated vegetatively by means of

A. corms

B. bubils

C. suckers

D. stolons

The part of the ear that is concerned with balance is the

A. semi-circular canals

B. incus

C. malleus

D. Eustachian tube