Biological Evolution

Q.

Which theory explains the origin of the universe?

1. Big Bang theory

2. Darwin's theory

3. Lamarck's theory

4. Mutation theory

Q.

How does natural selection lead to evolution?

Q. Any population has variations in characteristics. Those characterisatics enable some to survive better in the nature. Darwin called this as .

1. natural selection
2. origin of species
3. survival of fittest
4. Darwinism

Q.

Are all species related?

Q.

Theory of spontaneous generation was given by

1. Louis Pasteur

2. Spallanzani

3. F. Redi

4. Van Helmont

Q. ___ had a cranial capacity of 1500cc.

1. Homo erectus
2. Homo sapiens
3. Homo habilis
4. Homo neanderthalensis

Q. Selection of variants by environmental factors forms the basis for evolutionary processes.

1. False
2. True

Q.

Assertion [A]: Evolution is a continuous process that takes millions of years for speciation.
Reason [R]: During evolution, only mutation leads to speciation.

1. Both assertion and reason are incorrect.

2. Assertion is correct but, the reason is wrong.

3. Both assertion and reason are correct.

4. The assertion is correct and reason explains the assertion

Q. Which theory explains the origin of the universe?

1. Darwin's theory
2. Big Bang theory
3. Lamarck's theory
4. All of the above

Q.

Are introns removed?

Q.

Where does initiation occur?

Q. The process of making proteins from mRNA sequence is called .

1. translation
2. translocation
3. transcription

Q. Define the terms heredity and variation. (2 Marks)

Q.

Which mutation is beneficial for evolution?

Q. Adaptive radiation is a type of ___ evolution.

Q. What are speciation and evolution?

Q.

What is the main difference between quantum mechanics and general relativity?

Q. is a slow and continuous process by which living organisms develop into complex and better forms.

1. Evolution
2. Replication
3. Adaptation
4. Reproduction

Q.

Who Created DNA?

Q. Which of the following is a characteristic of the DNA molecule?

1. Made up of nucleotides
2. Single stranded molecule
3. Nitrogenous bases are AUGC
4. Absent in viruses

Q. Which of the following is not present in the cell membrane?

1. ATP
2. Protein
3. Carbohydrate
4. Lipid

Q. Evolution is a gradual change that develops a species into a:

1. Different form
2. Complex Form
3. Better form
4. All of the above.

Q. Miller’s experimental setup replicated the conditions of primitive Earth and witnessed the formation of complex organic molecules, such as:

1. Proteins
2. Primitive cells
3. Ammonia
4. Amino acids

Q. Speciation may take place when _______ is/are combined with geographical isolation.

1. variations
2. genetic engineering
3. cloning
4. duplication

Q. This section contains 1 Match the column type question, which has 2 Columns (Column I and Column II). Column I has four entries (A), (B), (C) and (D), Column II has four entries (P), (Q), (R) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II.
Four choices (A), (B), (C) and (D) are given for this question, out of which ONLY ONE is correct.
इस खण्ड में 1 कॉलम मिलान प्रकार का प्रश्न है, जिसमें 2 कॉलम (कॉलम I तथा कॉलम II) हैं। कॉलम I में चार प्रविष्टियाँ (A), (B), (C) तथा (D) हैं, कॉलम II में चार प्रविष्टियाँ (P), (Q), (R) तथा (S) हैं। कॉलम I की प्रविष्टियों का मिलान कॉलम II की प्रविष्टियों के साथ कीजिए। कॉलम I में दी गयी प्रत्येक प्रविष्टि का मिलान कॉलम II में दी गयी एक या अधिक प्रविष्टियों के साथ हो सकता है।
इस प्रश्न के लिए चार विकल्प (A), (B), (C) तथा (D) दिए गए हैं, जिनमें से केवल एक सही है।

Match the following columns and choose the correct option.
कॉलमों का मिलान कीजिए तथा सही विकल्प का चयन कीजिए।

	Column I कॉलम I		Column II कॉलम II
(A)	Parasitic परजीवी	(P)	Truffle ट्रफल
(B)	Septate mycelium पटयुक्त कवकजाल	(Q)	Puccinia पक्सिनिया
(C)	Asexual spores are usually formed प्रायः अलैंगिक बीजाणु निर्मित होते हैं	(R)	Albugo एल्बूगो
(D)	Karyogamy occurs in basidium केंद्रकलयन, बैसिडियम में होता है	(S)	Agaricus अगेरिकस

1. A(Q, R); B(P, Q, S); C(P, R); D(Q, S)
2. A(Q, S); B(P, Q); C(Q, S); D(Q, R, S)
3. A(Q); B(P, S); C(P, Q, R); D(R, S)
4. A(P, R, S); B(Q, R); C(P, S); D(Q, R)

Q.

Assertion (A): Without variations, evolution is impossible.
Reason (R): Only useful variations are transmitted to the next generation.

1. Both A and R are true and R is the correct explanation of A

2. Both A and R are true but R is not the correct explanation of A

3. A is true but R is false

4. A is false but R is true

Q.

Arrange the following in sequence of their occurrence:
(i) Mutation
(ii) Reproductive isolation
(iii) Natural selection
(iv) Evolution

1. (i), (ii), (iii), (iv)

2. (iv), (iii), (ii), (i)

3. (i), (iii), (ii), (iv)

4. (iii), (ii), (i), (iv)

Q. According to abiogenesis life originated from matter.

1. inorganic
2. non-living
3. extra-terrestrial

Q. Define:
(i) Vestigeal organs (ii) Variations (iii) Neo-Darwinism

Q. Each nucleotide consists of a pentose sugar, nitrogenous base and a

1. phosphate group
2. sulphate group
3. ammonium group
4. chloride group