SCERT Maharashtra solutions for सायन्स अँड टेक्नॉलॉजी पार्ट २ [इंग्रजी] इयत्ता १० महाराष्ट्र राज्य मंडळ chapter 1 - Heredity and Evolution [Latest edition]

Transfer of information from molecules of DNA to mRNA is called as ______ process.

Similarities in the initial stages indicate the _______ evidence.

______ is a vestigial organ in human beings.

Nitrogenous molecules ______ does not present on mRNA strands.

Various theories about the origin and development of living organisms have been proposed so far, among which the theory of ______ is the most widely accepted.

The carbon dating method was developed by ______.

It was asserted by ______ that the principle of natural selection was useful in the gradual development of living organisms.

Find an odd one out.

Find the odd one out.

Adenine, Guanine, Cytosine, Thymine, Uracil

I am a connecting link between reptiles and mammals. Who am I?

Who is the pioneer of modern genetics?

Which process is shown in the following diagram?

In which book Darwin had published his theory of Natural selection?

Which process is shown in the diagram given below?

Name the parts shown in the diagram.
Human jaw

Appendix : vestigial organ : : Peripatus : ____________

Theory of evolution : Darwin : : ____________ : Lamarck

Changes in the nucleotide of gene : Mutation : : Changes in the place of ribosome : __________

The decaying process of C-14 occurs continuously in dead organisms only.

Match the following.

Define.

Translation

Define Translocation.

Define mutation.

Give scientific reason.

Some of the characters of parents are seen in their offspring.

Give scientific reason.

Peripatus is said to be the connecting link between Annelida and Arthropoda.

Give scientific reason.

Vertebrates have slowly originated from invertebrates.

Give scientific reason.

Duck-billed platypus shows relationship with mammals.

Write a short note:

Embryological evidences

Complete the flowchart.

Write the advantages of heredity.

Enlist the evidences of evolution.

What is inheritance of acquired characters?

What is a species?

What is meant by speciation?

Which genetic disorders are caused by mutation?

Define the evidence of evolution shown in the figure.

Write short notes.

Radio carbon

Distinguish between the following.

Transcription and Translation

Explain the mechanism of hereditary changes.

What is carbon dating?

Where is carbon dating used?

What are objections raised against Darwin's theory?

Observe the given images and answer the following questions.

1. Which evolutionary evidence does it indicate?
2. What does it prove?
3. State another example of evolutionary evidence.

Define vestigial organs.

Write names of some vestigial organs in the human body.

Define fossil.

Explain the importance of fossils as proof of evolution with an example.

Explain Lamarck’s Principle.

Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.

Write a short note based on the information known to you.

Darwin’s theory of natural selection.

Complete the following paragraph with the words given in brackets.

(Cro-Magnon, brain, fire, agriculture, Cultural, homo-sapiens, wise man)
Evolution of upright man continued in the direction of developing its ________ for the period of about 1 lakh years and meanwhile it discovered the __________. Brain of a 50 thousand year old man had been sufficiently evolved to the extent that it could be considered as a member of the class _______. Neanderthal man can be considered as the first example of _______. The _______ man evolved about 50 thousand years ago and afterwards, this evolution had been faster than the earlier. About 10 thousand years ago, wise-man started to practice the _______. It started to rear the cattle-herds and established the cities. _______ development took place.

Observe the following images and answer the questions.

1. Which evolutionary evidences are indicated in the given picture?
2. How are they formed?
3. Which method is used to measure their age or their time?

Observe the picture and answer the following questions.

1. The given picture indicates which principle?
2. Explain that principle in your language.
3. What is the meaning of acquired characteristics?

Explain any five types of evidence that support the theory of evolution.

Explain in short.

Transcription

Explain in short.

Mutation

Write the answers to the questions by observing the figure below.

(a)	(b)	(c)

1. Write the name of the animal ‘(a)’ in the figure.
2. Write the name of the animal ‘(b)’ in the figure.
3. Write the name of the animal ‘(c)’ in the figure.
4. Which evolutionary evidence is illustrated by this figure?
5. Write the definition of that evidence for evolution.

Write the reasons why the theory of gradual development of living organisms is followed by all.