How does multicellularity evolve? Scientists who study a family of green algae that includes unicellular Chlamydomonas and multicellular Volvox are beginning to find answers to this question.

(A) Young Volvox adult, with about 2,000 small somatic cells in a monolayer at the surface, and nineteen large gonidia embedded in the extracellular matrix (ECM), just under the somatic cell layer.

All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an exoskeleton ...

BSEH Haryana Board Class 11 Biology Model Paper 2025: The Haryana Board Class 11 Biology Model Paper 2025 is released for the students of class 11. It is designed to help students prepare ...

September/2392024/BIO-HBSE-IMG.jpg" width="1200" height="675" /> BSEH Haryana Board Class 11 Biology Model Paper 2025: The Haryana Board Class 11 Biology Model Paper 2025 is released for the students ...