Structural Organisation in Animals

The type of muscles present in our

1. heart is involuntary and unstriated smooth muscles
2. intestine is striated and involuntary
3. thigh is striated and voluntary
4. upper arm is smooth muscle and fusiform in shape.

Frogs differ from humans in possessing :

1. hepatic portal system
2. paired cerebral hemispheres
3. nucleated red blood cells
4. thyroid as well as parathyroid

The cells lining the blood vessels belong to the category of :

1. Squamous epithelium
2. Columnar epithelium
3. Connective tissue
4. Smooth muscle tissue

Which one of the following structures in Pheretima is correctly matched with its function ?

1. Gizzard - absorbs digested food
2. Setae - defence against predators
3. Typhlosole - storage of extra nutrients
4. Clitellum - secretes cocoon

The ciliated columnar epithelial cells in humans are known to occur in :

1. Eustachian tube and stomach lining
2. Bile duct and oesophagus
3. Fallopian tubes and urethra
4. Bronchioles and Fallopian tubes

One very special feature in the earthworm Pheretima is that :

1. The S-shaped setae embedded in the integument are the defensive weapons used against the enemies
2. It has a long dorsal tubular heart
3. The typhlosole greatly increases the effective absorption area of the digested food in the intestine
4. Fertilisation of eggs occurs inside the body

Which of the following is correctly stated as it happens in the common cockroach?

1. Oxygen is transported by haemoglobin in blood
2. The food is ground by mandibles and gizzard
3. Nitrogenous excretory product is urea
4. Malpighian tubules are excretory organs projecting out from the colon

The cells lining the blood vessels belong to the category of :

1. Columnar epithelium
2. Connective tissue
3. Smooth muscle tissue
4. Squamous epithelium

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

1. coelomic fluid
2. haemolymph
3. slimy mucus
4. excretory fluid

Which one of the following correctly describes the location of some body parts in the earthworm Pheretima?

1. Two pairs of testes in 10th and 11th segments.
2. One pair of ovaries attached at intersegmental septum of 14th and 15th segments.
3. Two pairs of accessory glands in 16–18 segments
4. Four pairs of spermathecae in 4–7 segments

Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

1. Biceps of upper arm – smooth muscle fibres
2. Iris – Involuntary smooth muscle
3. Abdominal wall – smooth muscle
4. Heart wall – Involuntary unstriated muscle

The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is :

1. Cuboidal
2. Glandular
3. Ciliated
4. Squamous

The cell junctions called tight, adhering and gap junctions are found in :

1. Connective tissue
2. Neural tissue
3. Epithelial tissue
4. Muscular tissue

The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in -

1. vertebrae
2. tip of the nose
3. ear ossicles
4. nails

Earthworms have no skeleton but during burrowing the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to:

1. coelomic fluid
2. gut peristalsis
3. blood
4. setae

Which one of the following is the true description about an animal concerned?

1. Frog — Body divisible into three regions-head, neck and trunk
2. Rat — Left kidney is slightly higher in position than the right one
3. Earthworm — The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine
4. Cockroach — 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)

In which one of the following preparations are you likely to come across cell junctions most frequently?

1. Thrombocytes
2. Tendon
3. Hyaline cartilage
4. Ciliated epithelium

Bowman's glands are found in

1. juxtamedullary nephrons
2. olfactory epithelium
3. external auditory canal
4. cortical nephrons only

Areolar connective tissue joins-

1. Bones with muscles
2. Bones with bones
3. Fat body with muscles
4. Integument with muscles

Mast cells secrete-

1. Histamine
2. Hippurin
3. Haemoglobin
4. Myoglobin

Mast cells of connective tissue contain -

1. Heparin and calcitonin
2. Heparin and histamine
3. Vasopressin and relaxin
4. Serotonin and melanin

Ommatidia serve the purpose of photoreception in

1. cockroach
2. frog
3. humans
4. sunflower.

Which one of the following contains the largest quantity of extracellular material ?

1. Stratified epithelium
2. Myelinated nerve fibres
3. Striated muscle
4. Areolar tissue

Which cartilage is present at the end of long bones?

1. Calcified cartilage
2. Hyaline cartilage
3. Elastic cartilage
4. Fibrous cartilage

Melanin protects from:

1. Infrared rays
2. U.V. rays
3. Visible rays
4. X-rays

During an injury, the nasal septum gets damaged. For its recovery, which cartilage is preferred?

1. Fibrous cartilage
2. Elastic cartilage
3. Calcified cartilage
4. Hyaline cartilage

Which cells do not form a layer and remain structurally separate?

1. Nerve cells
2. Epithelial cells
3. Gland cells
4. Muscle cells

What happens if bone of frog is kept in dilute hydrochloric acid?

1. Will become flexible
2. Will turn black
3. Will break into pieces
4. Will shrink

Proteoglycan in cartilages which is part of polysaccharide is

1. Ossein
2. Cartilegen
3. Chondroitin
4. Casein

Characteristic of simple epithelium is that they

1. Continue to divide and help in organ function
2. They are arranged indiscriminately
3. They make a definite layer
4. None