Practice MCQs, Assertion–Reason, Match List and Fill in the Blanks from NCERT Class XI Animal Kingdom — answers & concise explanations.
Animal Kingdom - Class-XI: Practice ( MCQs, Assertion-Reason, Match List-I with List-II and Fill in the Blanks) for CBSE and NEET preparation 2026.
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Q441.
The level of organization seen in Sponges is described as?
[Animal-Kingdom] [class-xi]
Cellular
Tissue
Organ
Organ-system
Correct Option: A [ Cellular ]
Remark: Sponges (Porifera) exhibit the cellular level of organization. Although they are multicellular, their cells are not organized into true tissues or organs.
Q442.
Which of the following is commonly known as the Portuguese man of war?
[Animal-Kingdom] [class-xi]
Aurelia
Physalia
Adamsia
Pennatula
Correct Option: B [ Physalia ]
Remark: Physalia is a Cnidarian commonly known as the Portuguese man of war. It is a colonial organism known for its painful sting.
Q443.
Adamsia is commonly known as?
[Animal-Kingdom] [class-xi]
Sea Anemone
Sea Pen
Sea Fan
Brain Coral
Correct Option: A [ Sea Anemone ]
Remark: Adamsia is a genus of sea anemones. They are polyp forms of Cnidarians often found in symbiotic relationships with hermit crabs.
Q444.
Pennatula is commonly referred to as?
[Animal-Kingdom] [class-xi]
Sea Fan
Sea Pen
Sea Anemone
Coral
Correct Option: B [ Sea Pen ]
Remark: Pennatula is a colonial Cnidarian that resembles a quill pen, earning it the common name Sea Pen.
Q445.
Gorgonia is commonly known as?
[Animal-Kingdom] [class-xi]
Sea Fan
Sea Pen
Brain Coral
Sea Anemone
Correct Option: A [ Sea Fan ]
Remark: Gorgonia is a genus of soft corals commonly known as Sea Fans due to their fan-like branching structure.
Q446.
Meandrina is commonly known as?
[Animal-Kingdom] [class-xi]
Brain Coral
Sea Fan
Sea Pen
Sea Anemone
Correct Option: A [ Brain Coral ]
Remark: Meandrina is a genus of corals known as Brain Coral because their spherical, grooved surface resembles a mammalian brain.
