Question

no explaination is needed, i will hive a thumb, thanks

17. The logistic model of population growth a) describes growth in an idealized unlimited environment b) does not incorporates the concept of carrying capacity c) is sigmoidally shaped d) was exhibited by the elephant population in Kruger National Park after hunting stopped

Answer 1

Question 17- The logistic model of population growth is sigmoid in shape and has a characteristic S-shaped curve.

Option C- Is sigmoidally shaped- correct

Question 20- Gastrovascular cavity is the primary organ for digestion and circulation in phyla cnidaria and Platyhelminthes.

option A- Earthworm - correct

earthworm belongs to phyla Annelida. It has a complex digestive system than compared to hydra jellyfish and flatworms. Other options have a gastrovascular cavity as their digestive and circulatory system.

Question 24- A branchiopod can be distinguished from bivalve based upon the presence of lophophore

Option C - A lophophore-correct

Question 25- The flatworms have protonephridia as their excretory and osmoregulatory system. Protonephridia are made up of many flame cells and are responsible for the process of excretion and osmoregulation in flatworms.

Option A- Protonephridia -correct

Question 26- The molar teeth of the herbivores mammals are used for grinding purposes during chewing food. Molar teeth are usually large and flat shape located at the back of the mouth.

Option c- Grinding-correct

Question 27 - Endocrine glands are ductless glands and are responsible for production of hormones directly into the bloodstream. The pituitary gland controls the function of all other endocrine glands and is often regarded as master gland.

Option C - Pituitary gland- correct