Vay 4
Mark "M" for Mutualism, "C" for Commensalism, and
"P" for Parasitism.
RUSTEET
AILEE
1. __ Bees pollinate flowers and flowers provide
nectar for the bees
2. A tapeworm attaches to the intestines of
animals and absorbs their nutrients
3. Tiny birds helping to keep a crocodile's
mouth clean by eating scraps of
food caught between the crocodile's teeth
4. A tree frog using a plant for shelter from the
rain
5. A tick feeding on the blood of a deer
© The Science

1. Bees pollinate flowers and flowers provide nectar for the bees. "M"

2. A tapeworm attaches to the intestines of  animals and absorbs their nutrients. "P"

3.Tiny birds helping to keep a crocodile's  mouth clean by eating scraps of

food caught between the crocodile's teeth. "M"

4. A tree frog using a plant for shelter from the  rain. "C"

5.  A tick feeding on the blood of a deer. "P"

Explanation:

Mutualism : If 2 or more species are having an association and the relation is useful to both the organisms in relation, is termed 'mutualism'.

eg: In pollination bees transfer pollens and help reproduce flowering plants and bees get nutrition from the nector.

The plover bird comes to crocodile's mouth as it gives invitation to it to cleanse its mouth and food stuck between the teeth because crocodile cannot go flossing. In turn plover birds gets its food. In this relation both bird and crocodile benefited.

Commensalism: This is a relation between two organisms or species in which one partner is benefited while other neither gets harmed nor benefited.

eg :A tree frog utilizes the shade of plants and hide in the plant to get saved from prey in turn plant does not get anything.

Parasitism: In this association parasite lives in the organism and benefits from it but host gets harmed with this association.

eg: The tapeworm living in intestine of animals attaches to draw nutrition in turn animal gets disease caused by it.

Tick receive nutrition and the deer gets the disease.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.