The attachment of the embryo to the wall of the uterus is called

• A. Ovulation
• B. Implantation
• C. Gametogenesis
• D. Placentation

A feature which adopts birds to flight is the possession of

• A) scaly legs
• B) light bones
• C) two walking legs
• D) a pointed beak comb

The absence of anti-diuretic hormone in humans results in

• A. decreasing dehydration
• B. drastic dehydration
• C. eliminating dehydration
• D. increasing dehydration

The diagram below is an illustration of a type of eye defect in humans. Study it and answer this question.

The eye defect can be corrected by the use of?

• A. convex lens
• B. concave lens
• C. bifocal lens
• D. cylindrical lens

The crossing of individuals of the same species with different genetic characters is

• A. croos breeding
• B. polygenic inheritance
• C. non-disjunction
• D. inbreeding

In Mendel's experiments, it was discovered that the skin of an African can be attributed to

• A. a blending of black and white genes
• B. recombination of genes
• C. loss of the epidermis
• D. mutation in the skin cells

The hepatic portal vein is often heavily loaded with food-nutrients because it carries blood

• A. directly from the heart
• B. from the liver to the heart
• C. from the small intestine to the liver
• D. from the liver to join the posterior vena cava

In cellular respiration energy is made available to organisms by

• A. removal of a phosphate group from ADR
• B. breaking off a phosphate group from ATP
• C. adding a phosphate group to glucose
• D. breaking off a hydrogen ion from NADPH

The offspring produced when pure strains interbreed is descried as

• A. dominance
• B. phenotype
• C. allele
• D. hybrid

The use and disuse of body parts and the inheritance of acquired traits were used to explain

• A. Darwin's theory
• B. Lamarck's theory
• C. genetic drift
• D. gene flow