Which is NOT an example of a microbial symbiosis?

1. 1. bacteria passing through the placenta
   2. bacteria in the human colon
   3. tapeworm in the cow intestine
   4. protozoans found within termites

Which one of the following is light–gathering?

1. 1. Antenna complex
   2. Reaction centre
   3. Photosystem
   4. All of these

In which of the following joint muscles are arranged in the same plane as that of joint?

1. 1. Between radius and uln
   2. Between ulna and scapula
   3. Between femur and tibi
   4. Between humerus and scapula

Guard cells of stoma are _____.

1. 1. Irregular in shape
   2. Kidney-shaped
   3. Convex in shape
   4. Long and cylindrical in shape

Artherosclerosis is a major condition leading to_____.

1. 1. heart attack
   2. hypertension
   3. stroke
   4. tumor

Which of the following ions are involved in the initiation of nerve impulse_____.

1. 1. K+
   2. Fe
   3. Na+
   4. All of these

Tibia bone is in the body_____.

1. 1. Ear
   2. Leg
   3. Hand
   4. Nose

The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called_____.

1. 1. Diffusion
   2. Osmosis
   3. Plasmolysis
   4. Phagocytosis

Sub- phylum vertebrate is also known as_____.

1. 1. Pisces
   2. Aves
   3. Craniata
   4. Amphibia

homeostasis discovered by _____.

1. 1. Anselme Payen
   2. Jons jacob Berzeliis
   3. Walter Bradford Cannon
   4. None of them