STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

The bread is soft and porous when the yeast cells are mixed in the lump of wheat flour because

Given below are two statements
Statement I : Water vascular system is character of sea fan.
Statement II : Water canal system is character of Bath sponge.
Choose the correct answer from the option given below:

The male human is represented by sex chromo-somes

Which of the following statements are incorrect for bacterial pneumonia ?
(i) Bacteria like Streptococcus pneumoniae and Haemophilus influenzae are responsible for the disease in humans.
(ii) Pathogen infects the alveoli of the lungs.
(iii) As a result of the infection, the alveoli get filled with fluid leading to severe problems in respiration.
(iv) The symptoms include fever, chill, cough and headache.
(v) Intestinal perforation and death may occur in severe cases.
(vi) A healthy person acquires the infection by inhaling the droplets/aerosols released by an infected person.
(vii) A person can also acquire the infection by sharing glasses and utensils with an infected person.

Nicotine is

Mantle cavity is present in

Statement I: The body of a simple organism like Hydra have tissue organisation.
Statement II: In this animal, a group of similar cells along with intercellular substances perform a specific function.

Select the incorrect pair :