Protonephridia are present in_____.

1. 1. Segmented worms
   2. Round worms
   3. Tape worms
   4. Flateworm

Fishes, most of the invertebrates and amphibians are examples of _____animals?

1. 1. Homeotherms
   2. Endotherms
   3. Ectotherms
   4. Heterotherms

Cotton, wool, silk are examples of_____.

1. 1. Natural Fibres
   2. Synthetic Fibres
   3. Plant Fibres
   4. Animal Fibres

A line on map connecting places that receives equal solar radiation is called_____.

1. 1. Isochore
   2. Isobar
   3. Isohel
   4. All of these

In which of the following pigments major energy reserves and cell wall are like plants?

1. 1. Chrysophyta
   2. Rhodophyta
   3. Chlorophyta
   4. Phaeophyta

Antheridia and archegonia are born on_____in bryophytes.

1. 1. Gametophyte
   2. Sporophyte
   3. Both of these
   4. All of these

An isolated virus is not considered living since it_____.

1. 1. Can not metabolize
   2. Rapidly looses its Genome chemical inert
   3. Separates in to two inner parts
   4. Is coated with an air tight shield

The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time sequence came from the studies by_____.

1. 1. Social biologist
   2. Environmental biologist
   3. Paleontologist
   4. Marine biologist

Which of the following is a sentimentally arranged excretory system?

1. 1. Malpighian tubules
   2. Protonephridium
   3. Nephrons
   4. Metanephridium

In plants, the neighbouring cells are connected with one another by_____.

1. 1. Vacuoles
   2. Plasmodesmata
   3. Cell walls
   4. Both (b) and (c)