Question
What is meant by palaeontological evidences ?
✓
Answer
- Palaeontology means the study of fossils. Palaeontological evidences are the fossilized forms of various organisms which are obtained from different strata of the earth. They represent the dead remains of plants and animals that lived in the past in various geological layers.
- The older and more primitive forms of life are excavated from the lower strata of the soil whereas the recent ones are situated on the upper layers of the soil.
- Fossils are formed in variety of materials such as sedimentary rocks, amber, volcanic gas, ice, peat bogs, soil, etc.
- They provide the true, direct and reliable evidences of evolution.
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
Study the graph given below and answer the question that follow:
- Write the status of food and space in the curves (a) and (b).
- In the absence of predators, which one of the two curves would appropriately depict the prey population?
- Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line.
Incompatibility is a natural barrier in the fusion of gametes. How will you explain this statement?
A couple where both husband and wife are producing functional gametes, but the wife is still unable to conceive, is seeking medical aid. Describe any one method that you can suggest to this couple to become happy parents.
Name the two heart sounds. How and when are they produced?
Answer the following question based on the figures given below:
- What do S and P denote?
- Name the parts from Which they do develop?
- What is the term given to the point of attachment of the ovules in the fruit?
- What is the ploidy of embryo and the tissues in the ovary?
- What is the function of pericarp in fruit?
Complete the flow chart of development.
Using a Punnett Square, workout the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.
Distinguish between Hibernation and Aestivation.
Discuss about natural Auxin.
Sketch and label – Process spermatogenesis.