MCQOPTIONS

Explore topic-wise MCQs in Biology.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.	Which among the following is called “Portuguese man of war”?
A.	Pennatula
B.	Physalia
C.	Adamsia
D.	Meandrina
Answer» D. Meandrina

2.	Which among the following statements is incorrect about Obelia?
A.	Obelia (polyp) produces medusa by fragmentation
B.	Medusae undergoes sexual reproduction to produce polyp
C.	Obelia exists in both the forms in alternate generations
D.	This process is called metagenesis
Answer» B. Medusae undergoes sexual reproduction to produce polyp

3.	Which among the following statements is incorrect about ctenophores?
A.	Ctenophores are radially symmetrical
B.	They are diploblastic
C.	They reproduce both sexually and asexually
D.	They have ciliated comb plates on their body
Answer» D. They have ciliated comb plates on their body

4.	The property of emitting light from a living organism is called as ________
A.	Bioluminescence
B.	Phosphorescence
C.	Biophosphorescence
D.	Cytoluminescence
Answer» B. Phosphorescence

5.	Which among the following statements are incorrect about coelenterates?
A.	Coelenterates are acoelomates
B.	Tentacles have stinging capsules called cnidocytes that help in catching of prey
C.	In most of the cases, medusa is sessile
D.	Corals have skeleton that is made up of CaCO3
Answer» D. Corals have skeleton that is made up of CaCO3

6.	Coelenterates that are umbrella shaped are called as ______
A.	Medusa
B.	Polyp
C.	Taenia
D.	Auerelia
Answer» B. Polyp

7.	Which among the following is incorrect about Cnidarians?
A.	They are also called as coelenterates which means they are fully bellied
B.	The name Cnidaria is due to presence of stinging capsules called cnidoblasts on the surface of their tentacles
C.	Endodermal cells contain muscle and nerve cells that help in their mobility
D.	Hypostome helps in ingestion and egestion
Answer» D. Hypostome helps in ingestion and egestion

8.	Which among the following is incorrect about Coelenterata?
A.	Tissue level of organization is present in Coelenterata
B.	Sea anemone exists in colonies
C.	They have two layers of cells in their body i.e. they are diploblastic
D.	They have a complete digestive system
Answer» E.

9.	Some sponges are radially symmetrical
A.	True
B.	False
Answer» B. False

10.	Which among the following is incorrect about Porifera?
A.	The name Porifera comes from the pores present on the surface of the sponges
B.	A hard and protective skeleton made up of spongin or spicules supports the body
C.	Development of embryo takes place through an intermediate larval stage
D.	The digestive system in Porifera is incomplete
Answer» E.

11.	Transport or canal system in Porifera helps in exchange of gases, distribution of food, water removal, gathering of food and formation of new individual.
A.	True
B.	False
Answer» C.

12.	The property of not having separate sexes in an organism is called as __________
A.	Hermaphrodite
B.	Oogamous
C.	Homogamous
D.	Heterogamous
Answer» B. Oogamous

13.	Choanocytes are also called as ________
A.	Flagellated cells
B.	Collar cells
C.	Amoeboid cells
D.	Epidermal cells
Answer» C. Amoeboid cells

14.	Which among the following is incorrect about transport canal system in Porifera?
A.	Water enters the cavity through minute pores called as ostia
B.	Flagellated cells create water currents inside spongocoel
C.	Collar cells help in the distribution and filtering of food materials
D.	Water leaves the spongocoel through Osculum
Answer» D. Water leaves the spongocoel through Osculum

15.	Opening on the upper side of spongocoel _________
A.	Osculum
B.	Cnidoblasts
C.	Spicules
D.	Ostia
Answer» B. Cnidoblasts