Assertion : Petrified fossils contain hard parts of organisms.
Reason : Moulds and casts lack the remains of organisms.

Asseration Petrified fossils contains hard parts of orginisms Reason Moulds and casts lack the remains of organisms

Assertion : Consciousness is a defining property of living organisms. Reason : Human being is the only organism that has self consiousness.

What kind of fossils is the petrified excrete of organisms ?

Assertion (A): Fossils are remains of dead organisms. Reason (R): It is helpful in study of evolution .

Assertion: Slime moulds are protistan decomposers. Reason: Slime moulds are eukaryotes.

Assertion: Slime moulds are protistan decomposers. Reason: Slime moulds are eukaryotes.

Assertion : Specialzation of cells is advantageous for the organism. Reason : It increase the operational efficiency of an organism.

Assertion :- Fossils are always remains of hard parts of life -forms found only in rocks. Reason :- Organisms get buried in soil crust when they die .

Assertion. Hormones are carried to the target organs by blood. Reason. Endocrine glands lack ducts.