Question

Identify the incorrectly matched pair concerning the general characteristic features of higher animals.

• A. Type of cells - eukaryotic
• B. Number of cells - multicellular
• C. Nutrition - heterotrophic
• D. Reproduction - asexual

Answer 1

The correct option is D Reproduction - asexual

Animal cells have a well developed nuclear membrane and membrane-bound cell organelles. Thus animals have eukaryotic cells. Animals are made up of more than one cell and therefore are multicellular.

For nutrition, animals depend upon other organisms as they cannot prepare their food. Thus animals are heterotrophic. The heterotrophs can either be parasitic (feeding on living organisms) or holozoic. In the holozoic mode of nutrition, the organism ingests the food with all sorts of nutrients. The nutrients are broken down into simpler molecules (digestion) inside the alimentary canal. The digested nutrients are absorbed by the blood (absorption) and are taken by the cells for its metabolism (assimilation). The remaining food is then ejected from the body (egestion).

Sexual reproduction is the common mode of reproduction in most animals. It involves the fusion of gametes to produce the zygote. Asexual reproduction is seen in only in some lower phyla.