Earthworm and Cockroach - Anatomy and Physiology
Study the anatomical structures and physiological systems of earthworms and cockroaches, including digestive, respiratory, nervous, and blood vascular systems.
Questions
Where are the genital openings of an earthworm present?
- Dorsal surface
- Ventral surface
- First segment
- Mid dorsal line
- None of these
Earthworms burrow in the soil and make it porous. Which of the following names is given to the earthworms because of this?
- Digger
- Enemy of farmer
- Friends of farmer
- Friends of soil
- Friends of plants
The body of an earthworm is divided into ___________ metameres.
- 50-100
- 100-120
- 120-140
- 140-160
- 50
Which of the following statement(s) is/are incorrect regarding the prostomium?
(a) It is present at the anterior end.
(b) It is the mouth of the earthworm.
(c) It helps to open the cracks of soil.
(d) It is sensory in function.
- a and d
- only b
- only d
- b and c
- a and c
Which of the following statements is not true regarding the muscular gizzard in earthworm?
- It helps in movement.
- It helps in grinding the soil particles.
- It helps in decaying the leaves.
- It helps in decaying the oragnic matter.
- It is present in 8th and 9th segments.
Which of the following organs is/are present for respiration in an earthworm?
- Gills
- Lungs
- Trachea
- Skin
- Book lungs
Waste material containing ___________ are removed through nephridia in earthworm.
- carbon di-oxide
- nitrogen
- oxygen
- soil
- waste organic matter
The ganglia present in earthworm is related to which of the following systems?
- Nervous system
- Blood vascular system
- Respiratory system
- Excretory system
- Sensory system
Which of the following statements is/are not correct regarding the blood vascular system in an earthworm?
a. It has open blood vascular system.
b. It has 5 aortic arches known as heart.
c. Each segment has a small blood vessel.
d. Blood is sent from dorsal blood vessel to ventral one.
- b and c
- c and d
- a and d
- b and d
- a and b
Which of the following nephridia is/are present as three paired tufts in the 4th, 5th and 6th segments?
(a) integumentary
(b) pharyngeal
(c) septal
- only a
- only b
- only c
- a and b
- b and c
Find the odd one out.
- Labrum
- Maxilla
- Mandible
- Labium
- Prothorax
Which of the following statements is/are correct about cockroaches?
a. They belong to the phylum Arthropoda.
b. They are nocturnal.
c. They have hard chitinous outer covering.
d. Their body is divided into four distinct parts.
- a, b and c
- b and c
- d only
- a and d
- a and c
Which of the following statements are correct about the blood vascular system of cockroaches?
a. It is of open type.
b. Blood vessels are well-developed.
c. Ostia is a part of the heart.
d. Haemolymph is composed of haemocytes only.
- a, b and c
- a and d
- b and c
- a and c
- b, c and d
Match the following.
| a. chemoreceptors | 1. reproductive |
| b. capillaries | 2. sensory |
| c. spermatozoa | 3. nervous |
| d. ganglia | 4. blood vascular |
Select the correct option.
- a - 2, b - 3, c - 1, d - 4
- a - 4, b - 3, c - 1, d - 2
- a - 2, b - 4, c - 1, d - 3
- a - 1, b - 2, c - 4, d - 3
- a - 1, b - 3, c - 2, d - 4
The abdomen in both males and females consists of 10 segments. In females the _______ sternum is boat shaped and in males genital pouch or chamber lies ventrally by the _________ sternum.
- 9th , 7th
- 7th , 9th
- 7th , 10th
- 9th , 10th
- 10th , 7th