Question
Write the objections raised against Darwin's theory of natural selection.
✓
Answer
Some of the main objections raised against Darwin's theory of natural selection are as follows:
i. Natural selection is not the only factor responsible for evolution.
ii. In his theory, Darwin did not explain the inheritance of useful and useless modifications.
iii. No explanation regarding slow and abrupt changes was provided in this theory.
i. Natural selection is not the only factor responsible for evolution.
ii. In his theory, Darwin did not explain the inheritance of useful and useless modifications.
iii. No explanation regarding slow and abrupt changes was provided in this theory.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write information about the given atomic numbers in the table. 10, 20, 7.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
What is hypertension? Why is it caused? What harm can it do?
The electronic configuration of anelement X is 2,8,8,2.
i. What is the atomic number of the element X ?
ii. To which group does this element belong?
iii. In which period does this element lie?
i. What is the atomic number of the element X ?
ii. To which group does this element belong?
iii. In which period does this element lie?
Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is this relation known?
An object is placed at a distance of $100\ cm$ from each of the above lenses $A$ and Calculate:
→- Image distance, and
- Magnification, in each of the two cases.
Answer the following questions with the help of the given diagram:
(a) Name the process shown in the diagram.
(b) How does this process take place ?
(c)Give two examples in which this process is used.
(a) Name the process shown in the diagram.
(b) How does this process take place ?
(c)Give two examples in which this process is used.
In what ways are puberty and adolescence result of the activity of some glands in the human body?
The electrical resistivities of three materials P, Q and R are given below:$\begin{matrix}\text{P}&2.3\times10^{3}\Omega\text{ m}\\\text{Q}&2.63\times10^{-8}\Omega\text{ m}\\\text{R}&1.0\times10^{15}\Omega\text{ m}\end{matrix}$
Which material will you use for making:
→Which material will you use for making:
- Electric wires.
- Handle for soldering iron, and
- Solar cells?
Observe the diagram and answer the questions:
i. Which energy is generated from the power plant?
ii. State its source.
iii. Which is more eco-friendly - power generation from coal or power generation from natural gas? Why?
i. Which energy is generated from the power plant?
ii. State its source.
iii. Which is more eco-friendly - power generation from coal or power generation from natural gas? Why?
Compare: Observe the schematic of thermal power plant and the nuclear power plant. Discuss what are the similarities and differences between the two?
