Justify the following statements. a) Crow is an omnivore because it eats both animal and plant materials. b)It is said that the mode of nutrition ,in human beings and Amoeba, is quite similar
Because both eat food that may be solid or in liquid state ,this food is taken into the body and then it is broken down to provide the required nutrition to the body. They both show Holozoic mode of nutrition.
Answers
Answer: a) The crows are omnivores because they are eat both plant products and animals. Explanation: It is a bird that mostly feeds on animal food whereas sometimes it also feeds on plant products such as fruits and seeds.
b) Ingestion is the process by which the amoeba takes in food. This is done by forming temporary finger-like projections called pseudopodia around the food particle, which then form a bag-like structure called vacuole.
ii. Digestion is the process wherein the food is broken down into simpler substances in the vacuole, with the help of digestive enzymes.
iii. Absorption is the process by which the digested food in the vacuole is absorbed into the cytoplasm by diffusion.
iv. Assimilation is the process where a part of the food that is absorbed into the cytoplasm is used to generate energy for the amoeba while rest of the food, is used for growth and development.
v. Egestion is the process wherein the undigested food is thrown out of the body from the vacuole.