The oldest fossil belongs to which of the following group of plants/ animals?
Asteriodae
Rhodophyceae
Blue- green algae
Phaeophyceae
In Amoeba hyaline cap is formed by
around the food vacuole
around the contractile vacuole
around the nucleus
on pseudopodia
The chief advantage of encystment of an Amoeba is
protection from parasites and predators
the chance to get rid of accumulated waste products
the ability to survive during adverse physical conditions
the ability to live for sometime without ingesting food
In which kingdom, would you classify the archaea and nitrogen-fixing organisms. If the five-kingdom system of classification is used?
Protista
Monera
Plantae
Fungi
Which of the following is important source of edible protein?
Spirogyra
Porphyra
spirulina
Cephaleuros
C.
spirulina
Spirulina (blue-green algae) is highly rich in proteins, Vitamin- B complex and minerals. Powdered Spirulina is being used in herbal tonics and biscuits, Chlorella (50-55% protein content) and Porphyra (25-30% protein) are also used asa source of protein.
In Whittaker's system of classification, prokaryotes belong to the kingdom
Monera
Protista
Animalia
Fungi