c) Scales These can live both on land and in water. They are ectothermic animals, found in a warm environment. Their body is divided into... View Article
Answer: (c) Lysosome. Lysosomes comprise around fifty different degradative catalysts that can hydrolyze proteins, DNA, RNA, polysaccharides,... View Article
Plants are immobile and hence, need protection against variations in temperature, high wind speed, atmospheric moisture, etc. These variations... View Article
Coal is formed by the carbonisation of dead vegetation. Coal is a black hard rock, flammable in nature. It belongs to the category of solid... View Article
Meristematic cells are continuously dividing cells so they have a prominent nucleus and dense cytoplasm. But since these cells do not store food... View Article
Diagram of plant cells and their three parts. (a) Nucleus: It determines the function and development of the cell (b) Golgi apparatus: It... View Article
c) Oviduct In a human early development of fertilized egg takes place in the fallopian tube ( oviduct ).The female reproductive system is... View Article
True Freshly harvested grains must be dried before storing. True. If the grains remain moist they may get spoiled due to microbial infection. The... View Article
d) All of the above Poultry fowl are susceptible to viruses, bacteria and fungi. Viral disease of poultry fowl is fowl pox. Fowl cholera is a... View Article
If a potted plant is covered with a glass jar, due to the process of transpiration water vapours appear on the wall of the glass jar. Stomata... View Article
(a) Roots of the plant contain leucoplast which are colourless plastids and act as storage of food. These are the non-pigmented organelles which... View Article
(a) Bacteria Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. The cell wall lies outside... View Article
Ribosome Ribosome is not a part of nucleus. They are found floating in the cytosol or attached to the endoplasmic reticulum. Ribosomes are mainly... View Article
Arthropoda In Arthropoda, the coelom is filled with blood. The coelom is the space between the body wall and the gut wall lined by mesoderm on... View Article
False. Water which is suitable for drinking is called potable water. Potable water is defined as the water that can be considered safe for... View Article
False. Because, Magnesium is a combustible metal. When magnesium is in its metal form, it will burn very easily in air. However, in order to... View Article
a) A tool used with a tractor is Seed Drill. It is used to sow seed at a uniform distance. It sows the seeds in the soil and then covers it... View Article
False Bacteria called as Rhizobium present in the root nodules of leguminous plants fix nitrogen. It is a soil bacterium that fix nitrogen from... View Article
Both plant and animal cells comprise membrane-bound organelles, such as endoplasmic reticulum, mitochondria, the nucleus, Golgi apparatus,... View Article
