Coral bleaching, a significant threat to coral reefs, is PRIMARILY caused by the expulsion of which symbiotic organisms due to environmental stress?
Dinoflagellates
Zooxanthellae
Diatoms
Cyanobacteria
Related Questions
Diploblastic animals belong to the phylum
Protista
Protozoa
Coelenterates
Platyhelminthes
The nerve net of Hydra lacks
Neurons
Connections
Dendrites
Directions in impulse
In the life cycle of Obelia, which phenomenon is observed?
Binary fission
Budding
Metagenesis
Fragmentation
The incorrect match is
Portuguese man of war – Physalia
Pennatula – sea pen
Gorgonia – Sea fan
Hydra – sea cucumber
Radial symmetry is seen in
Hydra
Schistosoma
Taenia
Fasciola
Hydra captures the victim by injecting the chemical
Kaliotoxin
Hypnotoxin
Toxoplasmin
Sarafotoxin
Gonads of Obelia occur
On blastocyst
In hydrula stage
In radial canals of medusa
At bases of tentacles of medusa
Which one of the following has a biradial symmetry?
Paramecium
Jellyfish
Cockroach
Sea anemone
Alteration of generation is also called
Metamorphosis
Metastasis
Metazoan
Metagenesis
Trichocyst and nematocysts are meant for
Defence
Nutrition
Respiration
Excretion
