Characteristics of Mammals — NEET Biology
📚 Practice ConceptExternal ears or pinnae are present. Different types of teeth are present in the jaw. Heart is four-chambered. They are homoiothermus. Respiration is by lungs. Sexes are separate and fertilisation is internal. They are viviparous with few exceptions and development is direct.
Which of the following statements regarding reproduction and development across early animal phyla (Porifera, Cnidaria, Ctenophora) are NOT correct? S1: Sponges are typically monoecious, producing both eggs and sperms, and exhibit internal fertilisation. S2: Metagenesis, an alternation of generations, is observed in some cnidarians where polyps produce medusae asexually and medusae form polyps sexually. S3: Ctenophores are exclusively dioecious with external fertilisation and direct development, exhibiting bioluminescence. S4: In Porifera, asexual reproduction mainly occurs through fragmentation, and their development involves a morphologically distinct larval stage. S5: Both Cnidarians and Ctenophores are characterized by the absence of larval stages, indicating direct development in these phyla.
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.