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Answer the following questions only in 'one sentence each :
What is protobiogenesis ?

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**Step-by-Step Text Solution:** 1. **Definition of Protobiogenesis**: Protobiogenesis refers to the process that describes the origin of the first life forms on Earth. 2. **Nature of First Life Forms**: It involves the formation of simple cells known as protobions, which are essential for the emergence of life. 3. **Characteristics of Protobions**: These protobions are composed of organic and inorganic molecules and are characterized by their lipid membranes. ...
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GURUKUL PUBLICATION - MAHARASHTRA PREVIOUS YEAR PAPERS- JULY 2017 -Section-II ( ZOOLOGY)
  1. The external layer of connective tissue sheath of human testis is

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  2. Glucose is taken back from glomerular filtrate

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  3. Pituitary dwarfism is treated with gene therapy by

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  4. Answer the following questions only in 'one sentence each : (i) Ment...

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  5. Name the two types of maps generated by HGP.

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  6. Answer the following questions only in 'one sentence each : What is ...

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  7. Answer the following questions only in 'one sentence each : Name the...

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  8. What is the full form of IVF ?

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  9. Answer the following questions only in 'one sentence each : What is ...

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  10. Sketch and label the ' Struture of Malpighian body'.

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  11. Attempt any TWO of the following . (i) Give reason - Archaeopteryx...

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  12. Attempt any TWO of the following . Summar the process of vaccine ...

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  13. Write a short - note on 'lac culture .

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  14. Attempt any TWO of the following . write the help of a suitable e...

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  15. Classify the chromosomes on the basis of position of centromere.

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  16. Attempt any TWO of the following : Give the symtoms of typhoid fever ...

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  17. With the help of suitable diagrams, explain how the age structures det...

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  18. Sketch and label the T.S. of the thyroid gland.

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  19. Describe the T.S. of human testic and explain the process of spermatog...

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  20. Describe the conducting system of human heart.

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