Paleontological Evidences

Q.

Explain the terms analogous and homologous organs.

Q.

___________ is a connecting link between annelida and arthropoda.

Q.

What is the evidence of evolution?

Q.

Wings of birds, bats, and human hands are examples of

1. Vestigial organs

2. Analogous organs

3. Homologous organs

4. Exoskeleton

Q.

Can the wing of butterfly and wing of bat be considered as homologous organs? Why or why not?

Q.

The earliest fossil form in the phylogeny of horse is_______.

1. Merychippus

2. Equus

3. Eohippus

4. Mesohippus

Q.

Limbs of a frog, lizard, bird, human are

1. analogous

2. homologous

3. analogous and homologous

4. used to fly

Q. Which among the following statements are correct with respect to fossils?

1. Fossils can help in tracing the evolutionary history of the organism.
2. The study of fossils is called palaeontology.
3. The timescale in which the organism existed can be determined by studying fossils.
4. All fossils represent extinct species.

Q.

What are the evidences of evolution?

Q. How are fossils formed? Describe, in brief, two methods of determining the age of fossils.

Q.

Do Lampreys Have An Operculum?

Q. In a family, a girl and her brother are said to be more closely related as compared to girl and her first cousin on evolutionary basis. Identify the correct statement based on this information.

Statement 1: They have a common ancestor in the second generation.

Statement 1: They have a common ancestor in the first generation.

1. Only statement 1 is correct
2. Only statement 2 is correct
3. Both the statements are correct
4. Both the statements are incorrect

Q.

Body parts of different animals having a common origin but different functions are called:

1. Analogous

2. Paralogous

3. Heterologus

4. Homologus

Q. State the connecting links between Peripatus with Annelida and Arthropoda.

Q.

Homology is exhibited by:

1. Wings of butterfly, birds, and bat

2. Paddle of whale, forearm of horse, and forelimbs of man

3. Tail of monkey and birds

4. Sting of scorpion and Apis

Q.

What is Phylogenetics?

1. It is the history of evolution of species.

2. It is the assumption of evolution and creation.

3. It is prediction for future evolution.

4. It is used to estimate the age of fossils.

Q. Which is a connecting link between fishes and amphibians?

1. Catfish
2. Gambusia
3. Protopterus
4. Clupea

Q.

Wings of a bird and and wings of an insect are

1. Homologous organs

2. Analogous organs

3. Vestigial organs

4. Locomotory organs

Q. List the various methods to estimate the age of fossils.

Q. Founder of 'palaeontology' is

1. Birbal Sahni
2. Cuvier
3. Dickersom
4. Darwin

Q.

Bilateral, dorsiventral symmetry is found in ___.

1. Liver fluke

2. Arthropods

3. Annelids

4. Nematodes

Q. Peripatus is the connecting link between

1. Molluscs and arthropods
2. Reptiles and mammals
3. Annelida and helminthes
4. Annelids and arthropoda

Q.

Differentiate between homologous and analogous organs by giving examples.

Q.

Where do paleontologists look for fossils?

Q. Radiometric dating uses knowledge of isotope decay to calculate the age of samples. Carbon dating is most accurate for samples less than 50, 000 years old. Uranium-thorium dating is best for samples less than 1 million years old. Uranium-lead dating is best used for samples 1 million to 4.5 billion years old.
Students have located a fossil in layer D of the sedimentary rock in the image. The rocks in layer C have been dated at 1 million years old. What method of dating would be best for determining the age of the newly discovered fossil?

1. Carbon dating
2. Uranium-lead
3. Uranium-thorium
4. Carbon dating and Uranium-thorium dating would both be appropriate

Q. Palaeontological evidence in favour of organic evolution is beautifully illustrated by

1. Duck billed Platypus
2. Archaeopteryx
3. Darwin's finches
4. Peppered moth

Q. Sir we always say that the dinosaur are extent but they may evolute to give birth to new species.why

Q. Choose the correct order of epochs in the tertiary period.

1. Paleocene Eocene Oligocene Miocene Pliocene
2. Eocene Oligocene Paleocene Miocene Pliocene
3. Miocene Eocene Pliocene Paleocene Eocene
4. Paleocene Miocene Oligocene Pliocene Eocene

Q. One pair of organs in the following animals are not homologous. This is :
(a) forelimbs in humans and lizard
(b) forelimbs in lizard and frog
(c) wings in butterfly and bat
(d) wings in bat and bird

Q. There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C, D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.