Structural Organisation in Animals · Question 65

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