In a newly cleared area three plants X, Y and Z were planted at the boundary. Plant X spread over the entire area with time, while plants Y and Z were found limited in the area near the boundary. Select the correct option regarding it.
ASeeds of plant X are dispersed by explosion.
BSeeds of plant Y are dispersed by wind.
CSeeds of plant Z are dispersed by animals.
DNone of these
Ans 2:
Class : Class 8
I don't understand why answer is D because all options A, B and C are correct. As it is said that plant X spread in the entire area, it has to be explosion, as it covers only a short distance. It is also said that plants Y and Z were found limited near the boundary, so Y and Z maybe wind, water or animals.
Ans 3:
Class : Class 6
Ans is C because animals go for a less distance and they take the seed and they take out the seed at that place where they reached.