Advertisements
Advertisements
Question
Write the hypothetical proposals put forth by Oparin and Haldane.
Solution
Following were the hypothetical proposals put forth by Oparin and Haldane:
- Life originated from pre-existing non-living organic molecules.
- Primitive atmosphere was devoid of oxygen; it had high temperature, volcanic storms and was mainly composed of CH4, NH3, H2, etc.
- These organic molecules underwent some series of reactions and resulted in the formation of complex molecules known as coacervates.
- These coacervates would have taken part in the evolutionary process and lead to the formation of first life forms.
APPEARS IN
RELATED QUESTIONS
Why is reproduction essential for organisms?
Why are cucurbit plants said to be monoecious ?
Give two differences between heartwood and sapwood.
The period from birth to the natural death of an organism represents ______.
The property of an undifferentiated cell that has the potential to develop into an entire plant is called ______.
There are various types of reproduction. The type of reproduction adopted by an organism depends on ______.
Select the options that are true for both asexual and sexual reproduction from the options given below:
A few statements describing certain features of reproduction are given below:
- Gametic fusion takes place
- Transfer of genetic material takes place
- Reduction division takes place
- Progeny have some resemblance with parents
Which of the following plant cells will show totipotency?
Introduction of alien species has led to environmental damage and decline of indigenous species. Give any one example of how it has affected the indigenous species?
______ is a life process that is not essential for an individual's survival but for the survival of the species.
