Which of the following has the most primitive respiratory system?

One adaptation shown by hydrophytes in fresh water habitats is the

Which of the following use diffusion as the principal method of gaseous exchange?

The theory which supports the view that the large muscles developed by an athlete will be passed on to the offspring was proposed by

The chromosomes of members of the kingdom Monera are within the

The mangrove swamp in Nigeria is restricted to the

The pancreas secretes enzymes for the digestion of

The causative agent of bird flu is a

A water medium is necessary for fertilization in

An example of a sex-linked trait is the A

In which of the following Nigerian states can montane vegetation be found?

Which of the following is true of cloning?

The process of shedding the exoskeleton of an arthropod is known as

Which of the following is a major cause of constipation in humans?

In mammals, the organ directly on top of the kidney is the

An accurate identification of a rapist can be carried out by conducting a

An example of a fish that aestivates is

The opening and closing of the stoma are regulated by

Which of the following is common to the mosquito, housefly and blackfly?

The organs that will be most useful to giant African rats in finding their way in underground habitats are the

A crucible of 5gm weighed 10gm after filling with fresh soil.It is then heated in an oven at 1000C for 1 hour. After cooling in a desiccator, the weight was 8gm.The percentage of water in the soil is

The waste product of plants used in the conversion of hide to leather is

The correct sequence of the movement of urea during formation is

In lizards, the lowing of the gular fold is used to

The photosynthetic pigments include

The highest level of ecological organization is the

The eye defect that rises because the cornea is not curved smoothly is

Which of the following is an example of parasitism?

The increasing order of the particle size in the following soil types is

Which of following factors can bring about competition population?

Stunted growth and poor root development are a result of a deficiency in

The cell organelle solely responsible for respiration is the

The organelle responsible for heredity is

The process illustrated is

The structure labelled I is the

The organelle responsible for sexual reproduction is

The organelle responsible for sexual reproduction is

The part labelled I is the

Oxygenated blood is pumped to the entire body from the part labelled

The experiment demonstrates

The part marked I will contain a high concentration of

The breeding posture illustrated in the diagram is known as

The diagram shows that the organisms are

Insulin is produced by the endocrine organ labeled

Which of the following will be true of dog II which lost its tail in an accident if it mates with dog III?

If the dogs are offspring of a monohybrid cross and the gene G for grey head is dominant over as illele g, the individual whose genotype is likely to be gg is

The type of protective adaptation exhibited by the animal is

The structure labeled I is