STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

Assertion : Darwin's finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds.

Reason : Ancestral seed-eating stock of Darwin's finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitats.

Which kind of therapy was given in 1990 to a four year-old girl with adenosine deaminase (ADA) deficiency?

Which of the following are homologous organs

Which one of the following is a synthetic drug

In most mammals, the testes are located in scrotal sac for

Choose correct option for given statements :
(i) The universe is very old almost 20 billion years old.
(ii) In the solar system of the milky way galaxy, earth was supposed to have been formed about 4.5 billion years back.
(iii) Life appeared 500 million years after the formation of earth.
(iv) The first non-cellular forms of life could have originated 3 billion years back. They would have been giant molecules (RNA, Protein, Polysaccharides, etc.).
(v) The first cellular form of life did not possibly originate till about 2000 million (2 billion) years ago. These were probably single-cells.
(vi) All life forms were in water environment only.

_______ are responsible for chemical coordination.

It is not an example of Australian marsupials.