The nucleus is a double-membraned organelle that contains the genetic material and other instructions required for cellular processes. It is... View Article
The primary role of acid in our stomach is to prevent infections in our stomach and to aid in the digestion of food. Also known as gastric juice,... View Article
Red cell count is carried out by a test called erythrocyte count or an RBC count. This test is done to diagnose an underlying problem or an... View Article
There are many reasons for adopting contraceptive methods. The most common are: Avoiding unplanned pregnancies Prevention of STDs Family... View Article
The water vascular system is a distinctive feature of echinoderms such as starfishes and sea cucumbers. The water vascular system is a complex... View Article
The type of farming done to meet family needs is called subsistence farming. If farming is done for the purpose of business or profit, it is... View Article
Tulsi leaves have reticulate venation. This means that the veins on the leaves form a net-like pattern. The centre of most reticulate venation... View Article
The total lung capacity of human beings is 6 litres. Lung capacity refers to the volume of air that can be held by the lungs at various phases in... View Article
The pyrimidine bases present in the DNA are cytosine and thymine. Apart from the pyrimidine bases, purine bases are also present - adenine and... View Article
The cell organelle responsible for initiating cell division is the centriole. It produces mitotic spindle fibres which are a crucial part of the... View Article
Testosterone is a sex hormone that is secreted by the testes. In males, it is produced by the testes and ovaries in females. The adrenal gland... View Article
Surface feeder fishes are called so because they feed in the upper water column. These fishes are also called Pelagic fish as they live in the... View Article
Steppes are a type of region characterized by vast, wide-open grasslands. Trees are generally absent, except near lakes or rivers. The climate of... View Article
Answer: In 1831, Robert Brown discovered the nucleus in the cell. The nucleus in eukaryotic cells is a protoplasmic body covered by a double... View Article
Pusa Lerma is an improved variety of wheat. It was created from another variety of wheat called Lerma Rojo using variation breeding or mutation... View Article
Public cleanliness is important for individual health. Public awareness of diseases, such as its mode of spread, causes and treatment can... View Article
Pneumatic bones in birds are hollow. This helps to shed unnecessary weight that may hamper with the flight dynamics. The hollow spaces are filled... View Article
Plasmolysis occurs due to osmosis. The cells lose water when in a hypertonic tonic solution, this leads to the contraction of the cell away from... View Article
