Correct the statement which is given below by replacing the underlined words alone, if found incorrect. Oxygen is formed during photosynthesis by the splitting of carbon dioxide .

Photosynthesis is the process in which plants use the energy from sunlight to produce glucose from carbon dioxide and water. Photosynthesis is two stage processes light dependent reactions and light independent reactions. The Light dependent reactions occur in the grana and require the direct energy of light to make energy carrier molecules which are used in the second process. Light energy is trapped by chlorophyll to make ATP (photo phosphorylation). At the same time water is split into oxygen, hydrogen ions and free electrons: 2 H 2 O → 4 H + + O 2 + 4 e - So, the statement is correct, oxygen is formed during photosynthesis by the splitting of carbon dioxide.

Correct the statements given below by replacing the underlined words alone, if found incorrect. The dark phase of photosynthesis takes place in the stroma .

Photosynthesis depends on the two reactions: light reaction and dark reaction. NOTE: Light reaction phase of photosynthesis takes place in thylakoids while dark reaction phase of photosynthesis takes place in the stoma. The space enclosed by the inner membrane of the chloroplast is called the stroma. The stroma of the chloroplast contains enzymes required for the synthesis of carbohydrates and proteins. Stroma contains a large number of organised flattened membranous sacs called thylakoids which are arranged in stacks like the piles of coins called grana. So, the statement is correct which is mentioned in the question.

Correct the statements given below by replacing the underlined words alone, if found incorrect. Glucose is transported through the phloem tube to various parts of the plant.

Phloem is a living tissue that carries food materials, (in particular, sucrose, a sugar) from the place it is available (source) to the places where it is needed (sink). It transports the organic materials, usually from leaves to other parts of the plants like roots, growing tips of stems and leaves, flowers, fruits etc. The food prepared in the leaves through the process of photosynthesis needs to be transported to each and every part of plant body, which is facilitated by this conductive tissue called phloem. Therefore, the statement is correct which is mentioned in the question that glucose is transported through the phloem (sieve) tube to various parts of the plant.