Ordinary table salt is sodium chloride. What is baking soda?

Ozone hole refers to

Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

Pollination is best defined as

Plants receive their nutrients mainly from

Movement of cell against concentration gradient is called

Photosynthesis generally takes place in which parts of the plant?

Most fish do not sink in water because of the presence of

1.swim bladder

2.air bladder

3.air sacs

4.air in spongy bones

Plants synthesis protein from

Plants absorb dissolved nitrates from soil and convert them into

Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

One of the following is not a function of bones.

Plants absorb most part of water needed by them through their

Photo-oxidation is

Process of cell division can take place by

Most highly intelligent mammals are

Plant development is influenced by

Prokaryotic cells lack

Photosynthesis takes place faster in

Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

Primary phloem develops from

Other than spreading malaria, anopheles mosquitoes are also vectors of

Plants that grow in saline water are called

Pyorrhoea is a disease of the

O2 released in the process of photosynthesis comes from

Placenta is the structure formed

Plants hormone that induces cell division is

Neurospora is used as genetic material because

Phloem is a tissue found in

N₂ content is kept constant in the biosphere due to

out of proteins, lipids and carbohydrates present in a cell membrane, what is true?

Potato is a modified form (outgrowth) of

Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?

Prothrombin which helps in clotting of blood is released by

Myopia is connected with

Most of the red, blue and purple colours of plants are due to a pigment called

Plants developing in dry conditions are

Plants growing on sand are called as

Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called

Ramapithecus and Cro-Magnon man are considered

Normal adult human male has

Plants wilt due to excess of

Monotremes are unique mammals because they

Poison glands of snakes are homologous to

Radical vascular bundles are those in which

Plant bends towards the source of light on account of the movement of curvature known as

Plant have ____ while animals lack it.

Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

Photosynthesis is a process

On which of the following plants did Gregor Mendal perform his classical experiment?

Pigmentation of skin is due to

Norepinephrine increases

Night blindness is cause by lack of which vitamin?

Monocot root differs from dicot root in having

Radioactivity is a phenomenon of the spontaneous emission of

Organic Substances which, in very small amounts, control growth and development called

Our major foods, fibres, spices, fruits and beverage crops are

Movements due to light are shown by

Outer covering of virus made up of protein is

Radish is a

Most common disease of poultry in India is

Most abundant tissues of our body are

Mumps is a disease caused by

Rain water helps to increase the ____ to some extent.

Number of chromosomes in Down’s syndrome is

Plants are killed in winter by frost

One of the following is most suitable for study of mutations

Pulses are a good source of

Oxygen in our blood is transported by a protein named

Nymph is the name of young one of

One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor’s statement?

Plants that grow under average temperature and moisture are called

Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

Mutation is

Pollination by wind is called

Pollen grains in plants are produced in

Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

Ptyalin is an enzyme produced in the

Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes