Daily NEET MCQ- March 21, 2022 - NEET MCQ

Increase in mass due to internal division and increase in number of organisms are twin characteristics of growth. In non-living organisms increase in mass occurs due to accumulation whereas in living organisms it happens due to the proteins and carbohydrates that we intake. Living organisms except plants grow until certain period of their life and then stop growing. Growth is not a sufficient a characteristic to determine if an organism is living. Sometimes it’s possible that even mountains and sand dunes grow due to an accumulation of sand.

Planaria uses the method of fragmentation and regeneration to reproduce. Whereas fungi reproduce using spores, amoeba uses binary fission to reproduce and hydra uses budding to reproduce.

Every organism responds to the external stimuli that the surrounding has on the organism. For example, a touch me not leaf gets closed when touched and a human being runs away when he sees a lion approaching him.

The drug AZT is used for preventing or treating AIDS, while cisplatin & taxol are for cancer and codeine is a sort of painkiller. The drug AZT is also known as Zidovudine. This drug AZT is an antiretroviral drug. It’s used along with other drugs as a combination.

Atoms & Molecules are the basic constituents because matter is made up of molecules and a molecule is made of atoms. Ions are either positively or negatively charged particles. Nuclei are the central part of atoms. When seen in the microscopic level, atoms are the basic unit of matter.

In rusting of iron, the oxidation state of iron changes, but in the conversion of water to ice, crumpling a sheet of aluminum foil and casting silver the chemical state remains same whereas the physical state changes. When iron is exposed to oxygen, iron oxide formation takes place.

The full for of SI is System International. It was first adopted in 1960 in the General Conference on Weights and Measures.

The standard unit of measurement is meter; hence the answer is meter. The distance between two cities is usually measured in kilometer but the standard unit is meter.

As the air is moving, we can solve this question from the air’s frame of reference. From the air’s frame of reference, the observer will be going towards the observer at 2m/s and the source will be coming towards the observer at 10-2 = 8m/s.
F = f(v+v₀)/(v+v₈)
= 20(330+2)/(330-8)
= 20*332/322 = 20.62Hz.

Apparent frequency F = f(330+v₀)/(330+v₈)
= 10(330)/(330-10) = 10.31Hz.
Wavelength = 330/F
= 330/10.31
= 32.007m = 32m.