Investigate the effects of predation by completing each...

"Investigate the effects of predation by completing each sentence: coevolution Introduction of a predator will likely result in a population: in the size of a prey Mullerian mimicry Over longer periods of time, the defenses against predation. species may respond by evolving competitor increase Such defenses may include to avoid detection by the predator: chemical defenses These defenses may also include the prey that are hazardous to the predator: where compounds are produced in bright coloration decrease The bodies of these species are usually characterized by predator Other prey species may take advantage of this hazard utilizing imitating the hazardous species, even though they themselves present no hazard to predators prey In response to these defenses, the predator species may in turn evolve abilities to overcome the defenses of the prey; leading to an 'arms race' called cryptic coloration Batesian mimicry"

Transcript

00:01 The question have asked us to investigate the effect of predation, okay, by completing each sentence.

00:08 They have given like a fill in the blanks and we have to complete each sentence.

00:12 Okay.

00:13 The first sentence is introduction of predator will likely result in a dash in the size of prey.

00:20 So we have introduction of predator in a population that will result in dash size of prey.

00:33 Okay.

00:36 So what it will cause? it will cause decrease, right? so if the predator increases, the population of the prey will decrease, right? so that is the first answer.

00:47 Okay.

00:48 The second question is, over longer periods of the time, the dash species may respond by evolving defenses against predation.

00:56 So, when the predator is introduced for the first time, the prey population will decrease, okay? but over the long period, okay, over the long period of time, the prey will evolve defense, right? so, the answer is prey, okay? the prey species will evolve, okay, evolve defense mechanism, okay? defense mechanism against the predator, okay? the third is such defense may include dash to avoid detection by predator.

01:40 Okay.

01:41 So it evolves the defense mechanism, right? so these defense mechanism will include cryptic coloration.

01:52 Cryptic coloration.

01:56 What does cryptic coloration means? it means like it camouflages.

02:01 Okay.

02:01 If there is a white color background then it becomes white, evolves the defense mechanism as white so that it is not detected by the predator okay it is it does it avoids the detection by predator okay so the fourth point is these defense may also include dash whose compounds are produced in the prey that are hazardous to the predator.

02:39 So one defense mechanism is cryptic coloration.

02:43 Another defense mechanism is chemical defense.

02:48 Chemical defense.

02:49 What happens in chemical defense? the prey, right? the prey produce hazardous compounds.

03:00 Hazardous compounds.

03:04 That may be dangerous, okay, that may be dangerous to the predator, dangerous to the predator.

03:16 Okay, so this is another defense mechanism of the prey.

03:22 Okay, next is the bodies of these species are usually characterized by dash...