MCQ Bank
A Jaw-like structure in the Mastax is called Trophi.
- A) False
- B) True
- C)
- D)
What is the distinguishing characteristic of the head in rotifers?
- A) Tentacles
- B) Antennae
- C) Mandibles
- D) Crown of cilia
Brachionus plicatilis belongs to the Class: -
- A) Rotifera
- B) Bdelloidea
- C) Monogononta
- D) Ploima
__________________ are sessile and lack true tissues and organs.
- A) Arthropods
- B) Annelids
- C) Molluscs
- D) Sponges
What is the body cavity type in rotifers?
- A) Acoelomate
- B) Hemocoelomate
- C) Coelomate
- D) Pseudocoelomate
Water flows through the sponge's body, facilitated by specialized cells called _______________________.
- A) Epithelial Cells
- B) Choanocytes
- C) Amoebocytes
- D) Spicules
__________________________ is commonly called as “Pacific Sea Nettle”.
- A) Brachionus plicatilis
- B) Octopus vulgaris
- C) Taenia saginata
- D) Chrysaora fuscescens
What is the distinguishing characteristic of the body covering in nematodes?
- A) Shell
- B) Cuticle
- C) Skin
- D) Scales
Which one of the following Phylum contains Acoelomates?
- A) Phylum Arthropoda
- B) Phylum Platyhelminthes
- C) Phylum Rotifera
- D) Phylum Echinodermata
Which one of the following animal belongs to Phylum Cnidaria?
- A) Brachionus
- B) Planaria
- C) Physalia
- D) Amynthas
Which structure is used in feeding by mollusks and is described as a rasp-like scraping organ?
- A) Tentacles
- B) Mantle
- C) Foot
- D) Radula
What distinguishes the male and female Ascaris lumbricoides in terms of size and appearance?
- A) Both males and females have a blunt tail.
- B) Males are larger with a pointed tail, while females are smaller.
- C) Males are smaller with a pointed tail, while females are larger.
- D) Both males and females have a pointed tail.
Which one of the following is Wrong for Phylum Cnidaria?
- A) Gastrovascular cavity
- B) Cnidocytes
- C) Radially symmetrical
- D) Triploblastic
Which one of the following Organ System is ABSENT in Phylum Platyhelminthes?
- A) Reproductive System
- B) Respiratory System
- C) Excretory System
- D) Digestive System
What distinguishes Phylum Mollusca from other phyla?
- A) Exoskeleton
- B) Soft body with mantle
- C) Radula
- D) Jointed legs
Compare the circulatory systems of mollusks and arthropods
- A) Both have open circulatory systems.
- B) Mollusks have a closed system, while arthropods have an open system.
- C) Mollusks have an open system, while arthropods have a closed system.
- D) Both have closed circulatory systems.
Explain the role of the cuticle in nematodes
- A) It facilitates movement and flexibility
- B) It serves as a sensory organ
- C) It acts as a protective shell
- D) It is involved in nutrient absorption
Simplest and primitive animals belongs to Phylum:
- A) Porifera
- B) Mollusca
- C) Arthropoda
- D) Annelida
Evaluate the ecological role of Octopus vulgaris in marine ecosystems
- A) They have a negligible impact on marine ecosystems.
- B) They play a vital role as predators, contributing to the balance of marine food webs.
- C) Their ecological role is uncertain.
- D) They disrupt the balance of marine food webs.
Which one of the following is True for Ostia?
- A) Tiny Openings
- B) Siliceous or Calcareous spicules
- C) Spongin Fibres
- D) Tissue