Explanation

• T = dominant allele (e.g., tall)
• t = recessive allele (e.g., short)

Explanation

The biosphere is the global ecological system integrating all living organisms (biotic) and their interactions with the non-living (abiotic) components (e.g., air, water, soil).

It spans from the deepest oceans to the atmosphere, encompassing all ecosystems where life exists.

Explanation

A molecule is formed when two or more atoms chemically bond together.

While "H" represents the element hydrogen, it is a single atom and not a molecule.

A molecule of hydrogen is represented as H2, where two hydrogen atoms are bonded together. 

Explanation

Rainfall is a crucial factor in greening deserts, as it provides the necessary water for plant growth.

Explanation

Moon completes one revolution around Earth in approximately 27.3 days.

The portion traversed by the moon in one day is called a nakshatra.

ND23-9-2023

Explanation

P-type materials are intrinsic 3D crystals of silicon or germanium subjected to controlled impurification with chemical elements from the IIIa column of the periodic table 

Explanation

V.M. Stern proposed the concept and terminologies of ‘Bioeconomics’

Biobased economy, economy, or biotechnology is an economic activity involving the use of biotechnology and biomass in the production of goods, services, or energy.

The terms are widely used by regional development

1. agencies,
2. national and international organizations,
3. and biotechnology companies.

Explanation

At the highest point of a projectile's motion:

- Its velocity is purely horizontal (vertical component = 0).

- Its acceleration is still vertically downward due to gravity.

So, the velocity vector is horizontal, and the acceleration vector is vertical ⇒ they are perpendicular.

∴ Angle between velocity and acceleration = 90°  

Explanation

Given:

- Length of string, L = 30 cm

- In 2nd harmonic, L = 3λ/4

Solving:

30 = (3/4)λ  

⇒ λ = (4 × 30) / 3 = 40 cm

Explanation

As a rocket moves upward, its acceleration increases continuously. 

This is because as the rocket burns fuel and expels exhaust gases, its mass decreases.

According to Newton's second law of motion (F = ma), with a constant force (the engine's thrust), a decreasing mass results in an increasing acceleration.