All reproductive tract infections (RTIs) are STDs, but all STDs are not RTIs- Justify with example.

STDs stands for sexually transmitted diseases

(c) Amylase , is the correct option.

Hints— (a) Organisms need energy for survival which they obtain from life processes such as nutrition and respiration. (b) Reproduction needs a lot of energy. (c) Genetic material is transferred from one generation to...

Salivary Amylase is the first enzyme to mix with food in the digestive tract.

Reproductive health refers to a total well-being in all aspects of reproduction i.e., physical, behavioural, psychological, social and physiological.

The principle of vaccination is based on the property of `memory' of the immune system. In vaccination, a preparation of antigenic proteins of pathogens or inactivated/live but weakened pathogens is...

(a) Each piece regenerates into a new Planaria. (b) Its filaments break into smaller pieces or fragments and each fragment gives rise to a new filament. (c) It releases spores which germinate into...

(i) The two sexually transmitted diseases (STDs) are gonorrhoea and syphilis. These infectious diseases spread from one person to another by sexual contact with an infected person. Two symptoms of STDs are...

(a) Organisms need energy for survival which they obtain from life processes such as nutrition and respiration. (b) Reproduction needs a lot of energy. (c) Genetic material is transferred from one generation to the...

Yes, it is possible that a trait is inherited but may not be expressed. For example, when pure tall pea plants are crossed with pure dwarf pea plants, only tall pea...