Sponges digest food intracellularly after particles are captured by choanocytes or transferred to archaeocytes. This matches their simple body organization and absence of a true gut. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Mesohyl is the gelatinous matrix inside sponge bodies. It contains archaeocytes, spicules, spongin fibers, and other cells, supporting the sponge body without forming true tissues. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Pinacocytes are flattened cells forming the outer surface, or pinacoderm, of sponges. They help protect and maintain the body shape but do not form a true tissue in the strict sense. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Sponges have strong regenerative ability because many cells remain flexible in function. This feature helps them recover from damage and is often demonstrated in basic zoology studies. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Archaeocytes are amoeboid cells in sponges. They are involved in digestion, nutrient transport, skeletal element formation, and regeneration because they can differentiate into several cell types. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
The leuconoid canal system is the most complex sponge water-current system. It contains many flagellated chambers and supports larger sponge body size by increasing filtration efficiency. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Many sponges are asymmetrical or only loosely organized in shape. Unlike bilaterians, they usually lack a definite anterior-posterior axis and true cephalization. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Sponges are filter feeders. Choanocyte flagella drive water flow, and food particles are captured from the water rather than chased or scraped from surfaces. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Gemmules are resistant internal buds produced by many freshwater sponges. They allow survival during harsh conditions and can develop into new sponges when conditions improve. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Sponges show cellular level organization. Their cells perform specialized functions, but they are not organized into true tissues, organs, or organ systems. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Spongin is a fibrous protein that forms a flexible skeleton in some sponges. It differs from hard mineral spicules and gives certain sponges an elastic texture. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.
Spicules are skeletal elements made of calcium carbonate or silica in many sponges. They provide support and protection and are important in sponge identification. This MCQ belongs to the Porifera topic in Animal Diversity-I and is written to test concept understanding rather than memorized wording.