The right answer is 2.
A prothallus is a small thin blade of chlorophyllian cells when it is green but can also be colorless and saprotrophic. It is derived from the development of a protonema formed during the germination of a spore in pteridophytes (Pteridophyta, ferns and other closely related species). It is a structure formed by mitotic divisions of haploid cells.
Answer:
Cell is the structural and functional unit of life.
Explanation:
The organisms are classified on the different characteristics basis on the similarities and differences among the organisms. On the cellular basis two main types of organism are unicellular organism and multi cellular organism.
The cell theory of the life was given by Schleiden and Schwann. The cell acts as the basic unit of life as all living organisms are made of the cell. The cell combine together to form tissue, tissue to form organs and organ system as given in the example of the cat.
Answer: B) Horse
Explanation: Heterotroph are the organism that cannot make their own food and depend on others for food and survival. Like Horse etc.
Autotrophs are the organisms that make their own food by the process photosynthesis. Such as plants like Oak tree, Fern etc.
I believe heterotrophs are organisms that get their energy by eating other organisms. These organisms are also called predators
The kind of compound that increases the hydrogen ion concentration in a solution is acid.