The main waste products formed in plants are

A. alkaloids tannins and resins

B. water, alkaloids and carbondioxde

C. oxygen, carbondioxide and alkaloids

D. water, carbondioxide and oxygen

In the kidney, the malpighian corpuscles is located in the

A. medulla

B. hilium

C. cortex

D. pelvis

The skin, through the sweat glands, function as

A. an excretory organ

B. a respiratory organ

C. a sensory organ

D. a protective organ

Parenchyma cells are serves as supporting tissue when they

A. contain chloroplast

B. have crystals

C. become flaccid

D. become turgid

Taxism differs from tropism because

A. the whole organism is affected

B. it is a directional movement

C. it is a response to multi directional stimuli

D. part of the organism is affected

A dry dehiscent fruit which breaks up into one-seeded part is a

A. schizocarp

B. capsule

C. follicle

D. legume

Airspace are characteristic of seeds of fruits dispersed by

A. birds

B. water

C. wind

D. explosive mechanism

In vegetation propagation, which of the following requires part of another plant to develop?

A. Scion

B. Bulb

C. Rhizome

D. Sucker

Which of these plants groups are normally propagated by asexual means?

A. Banana, yam, pineapple and cassava

B. Yam, cassava, rubber and banana

C. Yam, cassava, orange and banana

D. Banana, cashew, coffee and pineapple

In a mammal, the placenta performs functions similar to those to the

A. lungs kidneys and digestive system

B. lungs, heart and nervous system

C. liver, intestines and reproductive system

D. intestine, heart and digestive system