Tag: biology

Dermatogen is also known as protoderm which further divides to form the three dermal layer which is epidermis, endodermis and hypodermis. These form the protective layer of the plant. Epidermis is the outer layer which mainly bears small opening known as stomata.
Therefore, the correct answer is option B.

• Cardiac muscle is a type of involuntary striated muscle found only in the walls of the heart. 
• This is a specialized muscle that, while similar in some fundamental ways to smooth muscle and skeletal muscle, has a unique structure and with an ability not possessed by muscle tissue elsewhere in the body. 
• Cardiac muscle, like other muscles, can contract, but it can also carry an action potential (i.e., conduct electricity), like the neurons that constitute nerves.
•  Furthermore, some of the cells have the ability to generate an action potential, known as cardiac muscle automaticity. Cardiac muscle is adapted to be highly resistant to fatigue:
•  it has a large number of mitochondria, enabling continuous aerobic respiration, numerous myoglobins (oxygen-storing pigment), and a good blood supply, which provides nutrients and oxygen. 

A. Dionaea, also called as venus fly trap is an insectivorous parasitic plant native to the USA.

Mucor is a type of fungi, which is not an autotroph but is a saprophyte. It feeds on the dead and decaying matter.

A. The name autotroph is derived as "auto" means self and "troph" means feeding. so, the plants which can manufacture its own food are called as autotrophs. 

• Autotrophs are organisms, that can prepare their own food through the process of photosynthesis such as plants.
• An epiphyte is used to refer to a plant, that grows on another plant but is not dependent on that plant for its nutrition. 
• When an organism is nutritionally dependent on another organism, it is called parasitism. 
• Saprophytes are organisms, that feed on dead organic matter.
• Thus, option A is correct.

• Heterotrophs are unable to prepare their food wholly or partially and obtained food from the plant, called herbivores and from other animals, called as carnivores. 
• Autophytes are the plants that can manufacture their own food. Halophytes are plants that grow in extremely saline conditions. 
• Holophytes are the organism that prepares their food by photosynthesis.

A detritivore is a heterotrophic organism, which obtains its nutrition by feeding on detritus. Detritus is the organic matter made up of dead plant and animal material. So, the correct option is 'Dead and decomposed matter in the soil'.

• There are five steps in the process of Nutrition in animals.