At what level of organisation is Amoeba?

A. Tissue

B. Organ

C. Cellular

D. System

E. Filament

Which of these could be regarded as an advantage of complexity in higher organisms?

A. there is no cellular differentiation

B. Cellular differentiation leads to loss of independence of the cells

C. Complexity stops at cellular differentiation only

D. Cellular differentiation leads to internal structural specialization

Which of the following organisms is one-celled and free-living?

A. Volvox

B. Spirogyra

C. Rhizopus

D. Chlamydomonas

E. Hydra

One of the differences between plant and animal cells is that in plants

A. 'cells have less distinct outline, but animal cells have distinct outline

B. ell wall is made of cellulose, but animal cell wall is made of chitin

C. large vacuoles are absent, but present in animals

D. plastids are absent, but present in animals

E. carbohydrates are stored as starch, but as glycogen in animals.

Carbondioxide enters the stomata during photosynthesis through the process known as

A. osmosis

B. active transport

C. diffusion

D. inhalation

E. ventilation

Which of the following groups carry out similar functions in living things?

A. Vertebral column, chitin, and guard cells

B. Sclerenchyma, cartilage and chitin

C. Tendon, chitin and neurone

D. Collenchyma, Intercellular spaces and blood vessels

E. Blood vessels, lymph and shell

Which of the following statements is correct?

A. biceps muscles has its origin on the head of the humerus

B. biceps muscle is inserted at the ulna

C. triceps muscle originated at the scapula and head of the humerus

D. ulna is pulled up when the biceps is relaxed

E. radius is the point of insertion of triceps muscle

Which of the following pairs of tissues is responsible for strengthening the plant?

A. Phloem and Epidermis

B. Parenchyma and Cambium

C. Collenchyma and Sclerenchyma

D. Collenchyma and Cambium

E. Xylem and Cambium

Which of the following is not a tissue found in plants?

A. Epidermis

B. Phloem

C. Xylem

D. Dermis

E. Mesophyll

Higher organisms use a transport system and not diffusion only to distribute nutrients because

A. the ratio of their surface area to volume is small

B. metabolic waste products diffuse to the surface of the organisms

C. the rate at which nutrients and other substances diffuse increases

D. substances to be transported move shorter distances to reach the numerous cells

E. the internal structures of the organisms are in direct contact with the environment.

In complex food relationships in a community, the primary, secondary and tertiary consumers are referred
to as

A. symbionts

B. omnivores

C. heterotrophs

D. autotrophs

E. carnivores

The cell membrane of a cell is said to be semi-permeable because

A. it allows only large molecular substances to pass through it into the cell

B. it is actively involved in energy production in the cell

C. it actively allows all substances to pass through it by diffusion

D. it is actively selective in allowing substances pass through it

E. fatty acids are only the building blocks of the membrane