Q.1
The body wall of the earthworm is externally covered by ______
  • a) mucous
  • b) capsule
  • c) epidermis
  • d) cuticle
Q.2
The epidermis of earthworm is made of ______
  • c) columnar epithelial cells
  • a) squamous epithelial cells
  • b) cuboidal epithelial cells
  • d) multi-layered squamous epithelial cells
Q.3
The buccal cavity of the earthworm leads to the _____
  • a) gizzard
  • b) esophagus
  • c) pharynx
  • d) anus
Q.4
Identify the correct pathway of food ingested by an earthworm.
  • a) Mouth→Pharynx→Esophagus→Gizzard
  • b) Mouth→Esophagus→Pharynx→Gizzard
  • c) Mouth→Esophagus→Gizzard→Pharynx
  • d) Mouth→Pharynx→Gizzard→Esophagus
Q.5
What is the function of gizzard in earthworm?
  • a) Secretion of digestive enzymes
  • b) Grinding soil particles and leaves
  • c) Absorption of water
  • d) It is a respiratory structure
Q.6
Where are the calciferous glands of the earthworm present?
  • a) Esophagus
  • b) Gizzard
  • c) Stomach
  • d) Intestine
Q.7
Which segments of the earthworm contain the stomach?
  • a) 9th to 14th
  • b) 23rd to 25th
  • c) 16th to 18th
  • d) 5th to 8th
Q.8
Which segment of the earthworm contains the intestinal caecum?
  • a) 25th
  • b) 23rd
  • c) 24th
  • d) 26th
Q.9
What is the function of typhlosole in earthworm?
  • a) Mechanical breakdown of food
  • b) Secretes digestive enzymes
  • c) Increases the surface area for absorption
  • d) Excretes waste products
Q.10
Open blood vascular system is present in Pheretima.
  • a) True
  • b) False
Q.11
Which segments of the earthworm contain the blood glands?
  • a) 9th to 12th
  • b) 16th to 18th
  • c) 23rd to 25th
  • d) 4th to 6th
Q.12
Respiratory exchange in earthworms takes place through ______
  • a) gills
  • b) mouth
  • c) body surface
  • d) lungs
Q.13
What is the excretory organ in earthworm known as?
  • a) Gizzard
  • b) Typhlosole
  • c) Nephridium
  • d) Setae
Q.14
Which of the following is not a type of nephridia present in earthworm?
  • a) Intestinal
  • b) Septal
  • c) Integumentary
  • d) Pharyngeal
Q.15
Which of the following is not true about nephridia in earthworm?
  • a) They are excretory organs
  • b) They do not regulate the composition of body fluids
  • c) They are of three types
  • d) They regulate the volume of body fluids
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