Oxygen contents per liter of air is_____.

1. 1. 100 ml
   2. 200 ml
   3. 300 ml
   4. 400ml

Venus flower basket is also known as_____.

1. 1. Leucoselenia
   2. Sycon
   3. Spongilla
   4. Euplectella

The one which can tolerate highest external osmotic pressure is _____.

1. 1. Fungi
   2. Amoeba
   3. Bacteria
   4. Algae

Microspore of a seed plant that contain male gametophyte including the gamete is called_____.

1. 1. Microgametophyte
   2. Ovule
   3. Pollen grain
   4. Microsporangium

Main blood vessel of arthropods usually_____.

1. 1. Lies on dorsal side
   2. Lies on lateral side
   3. Lies not present
   4. Lies on ventral side

Which of the following is not included in Protostomes?

1. 1. Annelids
   2. Arthropods
   3. Hemichordates
   4. Molluses

The simplest of all bryophytes are_____.

1. 1. Embryophytes
   2. Liverworts
   3. Mosses
   4. Thallophytes

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by_____.

1. 1. Molecular biologists
   2. Freshwater biologists
   3. Social biologist
   4. Microbiologists

Mycoplasmas have been included in bacteria because _____.

1. 1. Are heterotrophic
   2. Do not have a cell wall
   3. Reproduce by binary fission
   4. Lack membrane bounded organelles

Communities are _____collection of organisms?

1. 1. May be static or dynamic
   2. Static
   3. Dynamic
   4. All of these