OAU Biology 2008/2009 Past Questions

Where is energy produced in a cell?

Which of the following organisms does not exist as a single free-living cell?

Euglena is an autotrophic organism because it:

In which of the following organisms does a single cell perform all function of active movement. nutrition, growth, excretion and photosynthesis?

What is the function of contractile vacuole in Paramecium?

The ability of organism to maintain a constant internal environment is known as:

Which of the following is the medium of transportation of nutrients within unicellular organism?

In aerobic respiration, oxidative phosophorylation takes place in

Bryophytes are different from following plants because they

In lower plants like mosses, the structure which performs the functions of roots of higher plants is called

Which of the following components of an ecosystem has the greatest biomass?

The young shoot of a plant is referred to as

The name of a bacterium which derives its energy from oxidizing nitrites into nitrates is

Potometer is used to measure

Meiotic cell division ensures that

The stem of young herbaceous plants are kept upright mainly by

Which of the following tissues is not found in the stem and root of monocotyledons?

Fruit enlargement can be induced by spraying young ovary with

A dry, indehiscent, winged fruit formed from one carpel is known as

A fruit which develops without fertilization is described as

A dwarf plant can be stimulated to grow to normal height by the application of

The condition known as cretinism is caused by the deficiency of

The different between viviparous and oviparous animal is

The following are features of the tropical rainforest except