A group of similar cells that perform a specific function is_____.

1. 1. Organelle
   2. Organ
   3. Tissues
   4. Organ System

Vocal cords are stretched across_____.

1. 1. Pharynx
   2. Glottis
   3. Larynx
   4. All of these

Centric discoid form of diatoms is_____.

1. 1. Coscinodiscus
   2. Camphyloneiscus
   3. Stephanotis
   4. Diplaneis

Who was first to propose an objective definition of instinct?

1. 1. Kohler
   2. Thorpe
   3. Pavlov
   4. Darwin

Most cell membranes are composed principally of ?

1. 1. Protein and Chitin
   2. DNA ad protein
   3. Protein and Lipids
   4. Protein and RNA

Blubber is a thick layer of fat which is present in _____.

1. 1. Marine Mammals
   2. Flying mammals
   3. Fresh water mammals
   4. Terrestrial mammals

Which of the following endoplasmic reticulum has no ribosome on its surface?

1. 1. rough
   2. smooth
   3. both
   4. None of these

Which of the following kidney stone are most common?

1. 1. Uric acid
   2. Calcium phosphate
   3. Calcium oxalate
   4. All of these

Which of the following bacteria do not have flagella commonly_____.

1. 1. Vibrio
   2. Streptobacilli
   3. Cocci
   4. Bacilli

Yellow cytoplasm in ascidian gives rise to_____.

1. 1. Notochord
   2. Epidermis
   3. Gut
   4. Muscle cells