NEET Test 155

In mango and coconut, the fruit is known as a drupe. They develop from monocarpellary superior ovaries and are one-seeded. In mango, the pericarp is well-differentiated into an outer thin epicarp, a middle fleshy edible mesocarp and an inner stony hard endocarp. In coconut which is also a drupe, the mesocarp is fibrous.

Potassium superoxide (KO₂) is used in oxygen cylinders in space and submarines because it acts as an oxygen

generator. It absorbs the CO₂ and increases the O₂ content.

This can be shown by the equation:

4KO₂ + 2CO₂ → 2 K₂CO₃ + 3O₂

As we can see in the equation, CO₂ is getting absorbed by KO₂ and oxygen is produced.

In places like space or inside submarines underwater, the level of oxygen is very low and oxygen cylinders are used.

Increasing the efficiency of these oxygen cylinders will help the cylinder to last longer.

The Magnus effect is not related to electromagnetic waves.

• The force exerted on a rapidly spinning cylinder or sphere moving through air or another fluid in a direction at an angle to the axis of spin is called the Magnus effect.
• This force is responsible for the swerving of balls when hit or thrown with spin.

The Doppler effect is the change in the observed frequency of an (electromagnetic) wave due to relative motion of the source and observer.

Interference occurs when several waves are added together provided that the phase differences between them remain constant over the observation time.

Diffraction takes place with sound; with electromagnetic radiation, such as light, X-rays, and gamma rays; and with very small moving particles such as atoms, neutrons, and electrons, which show wavelike properties.

Therefore, Magnus effect is our required answer.

Glycine is an amino acid that has a single hydrogen atom as its side chain. It is the simplest amino acid, with the chemical formula NH₂CH₂COOH. Glycine is one of the proteinogenic amino acids. It is encoded by all the codons starting with GG.

Chlorophyll is synthesized within the chloroplast from a plentiful precursor, the amino acid glutamate.

The Chemical Structure of Chlorophyll a. Every chlorophyll molecule is synthesized in the chloroplast from eight molecules of 5-aminolevulinic acid. The eight red heavy lines indicate the location of the atoms derived from these molecules of 5-amino- luevulinic acid in the finished molecule.

In females,homogamety is present and in males, heterogamety is present. In homogamety XX gene is present. In the female, both gametes that are obtained will be X. In males, XY is present and XO will also show heterogamety because on gamete formation they give X gamete and O gamete which does not express any sex while X represents male gamete.

Equisetum is a vascular cryptogam.

Equisetum is the only living genus in equisetaceae, a family of ferns, which reproduce by spores rather than seeds. Equisetum is a "living fossil", the only living genus of the entire subclass equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests.

Cretinism: Cretinism is not a hereditary disease because in this, a disorder of physical growth, mental growth, and sexual growth in children are retarded. Such a dwarf and sterile child is called a cretin. It is due to hyoisecreion of thyroid hormones. 

Cystic fibrosis: It is a common disorder of caucasian race in which thick and more salty mucus blocks the respiratory tract. The homozygous recessive condition produces the defective protein which regulates the chloride transport channel.

Thalassemia: Due to defective production of 𝛼 or 𝛽 chains of hemoglobin, autosomal recessive.

Hemophilia: Sex-linked disorder due to defective recessive gene.

If a transformer of an audio amplifier has an input impedance of 8Ω output impedance of 8 kΩ, the primary and secondary turns of this transformer connected between the output of the amplifier and to loudspeaker should have the ratio will be 1:32.