Question

1. Which of the following types of evolution result in adaptations?

Select one:

a. Sexual selection

b. Natural selection.

c. Genetic Drift

d. All of the above.

e. Both A & B

2. According to the video on the jumping peacock spider, males attract a mate using...

Select one:

a. Visual signals

b. Chemical signals

c. Acoustic signals

d. All of the above

e. Both A & C

3. Which type of sexual selection is depicted in the jumping spider?

Select one:

a. Male - Male Competition (Intrasexual Selection)

b. Female Mate Choice (Intersexual Selection)

c. Both

d. Neither

4. Explain from an evolutionary perspective why female peacock jumping spiders may choose males based on their songs, dances or displays.

Answer 1

1) E is the right option

sexual selection and natural selection leads to adaptation in the individual. The sexual selected individual and natural selected individual provides benfit to these individual.

genetic drift leads to reduce the adaptation.

2)

D is the right option.

because the spider releases pheromone to attractvother sex which comes under chemical signals.

The peahen has colorful wings on their body and attractvthe peacock by dancing. These comes under visual and acoustic signal.

3) C is the right otpion.

because female spider secretes pheromone hormone to attract male. That's why there is intersexual selection occur. There is female mate choice occur for male. The male fight to each other for getting female. That's why there is male- male competition.

4)

There is sexual selection occur between these species so that they can reproduce more successful offspring. Because ethe dominant parent bearing character will mate and inferior one sex will not mate with other sex. That's why fitness of the offspring is very high in this case of natural selection.