Evolution by Stage

Q.

What are fossil fuels? Give examples.

Q.

What are the four different kinds of fossil fuels?

Q. ___ are produced from the remains of plants and animals.

Q. Which one of the following is the best example of Retrogressive Evolution-

1. Flightless birds have evolved from flying birds
2. Flying birds have evolved from flightless birds
3. Fishes are evolved from Amphibians
4. Amphibians are evolved from fishes

Q.

Why are thorn of the Bougainvillea plant and a tendril of the Passiflora plant are considered as homologous organs?

Q.

What is the advantage of a phylogenetic tree?

Q.

What is the purpose of a phylogenetic tree?

Q.

What is a phylogenetic group?

Q.

What are the domains of the universal phylogenetic tree?

Q.

What is the function of phylogenetic trees?

Q.

Process of evolution is

1. Continuous

2. Discontinuous

3. Continuous in the past but discontinuous presently

4. Discontinuous in the past but continuous presently

Q.

what are fossil fuels ? why should we conserve it ?

Q.

What is a phylogenetic tree and what is its purpose?

Q. ''Birds ave evolved from reptiles'' State evidence to prove the statement.

Q. Describe homologous organs with the help of example.

Q. What is meant heredity and evolution

Q. Name any three fossil fuels.

Q.

Shankar wants to grow disease resistant variety of a plant in an area. Which of the following method will help him to do so ?

1. self pollination

2. cross pollination

3. vegetative propagation

4. artificial selection

Q.

arm bones of whales and humans are homologous organs or analogous organs?

Q.

Eye of fishes and squids are homologous.

1. True

2. False

Q. Development of complex organs do not occur by a single DNA change.

1. False
2. True

Q. DNA samples from three organisms X, Y and Z were collected and comapared. The analysis showed the percentage similarity in DNA among the three organisms as follows.

X and Y: 67%
Y and Z: 93.4%
X and Z: 69%
Using the information given above identify the correct statements.

1. X and Y are the most distantly related organisms
2. Y and Z are the least distantly related organisms.
3. Y and Z are the least closely related organisms
4. X and Z are the most closely related organisms.

Q.

What are fossil fuels ?

Q. What does phylogenetic basically mean?

Q.

What are the benefits of Artificial Selection to farmers?

1. It allows them to become less dependent on farmlands

2. It allows them to grow crops with desirable characteristics

3. It allows them to become less dependent on agricultural equipments

4. It allows them to grow crops throughout the year

Q. Which amongst the following are homologous?

1. Hands of human
2. Flippers of whale
3. Wings of birds
4. Fins of fishes

Q. ___organs have the same basic structure and origin.

Q. What is the best explanation that aquatic life exists even below antarctic sheet of ice?

1. Evolution continues in inner core of earth.
2. Water expands and becomes lighter near 0${}^0$C protecting underlying organisms.
   
3. All of the above.
4. Water is universal solvent.

Q.

Shankar wants to grow disease resistant variety of a plant in an area. Which of the following method will help him to do so ?

1. self pollination

2. cross pollination

3. vegetative propagation

4. artificial selection

Q. ___organs have the same basic structure and origin.