(i) No. there is no scientific proof for this statement. During day time photosynthesis takes place oxygen is evolved.
(ii) This reaction requires light hence the above statement is incorrect.

Roots, buds, matured stem, flowers and fruits.

(i) If the bark of a tree is damaged by the horn of a deer, the tree first seals the damaged region from microbial infection.
(ii) This happens by altering the chemistry of the affected area by forming a callus, which grows and covers the damaged area.

(i) Root climbers: Plants climbing with the help of adventitious roots (arising from node). Eg: Piper betel,Piper nigrum, Pothos.
(ii) Stem climbers: These climbers lack specialised structure for climbing and the stem itself coils around the Support. Eg: Ipomoea, Clitoria, Quisqualis.

(a) A sterile stamen  -   Staminode (b) Stamens are united in one bunch  - Monadelphous (c) Stamens are attached to the petals  - Epipetalous

Nitrogenous base	Inorganic base
In nitrogenous base the basic character is because of lone pair electron called lewis base	Inorganic base is because of hydroxyl ion that is Arrhenius base
Eg: Pyridine, Pyrimidine	Eg: NaOH

(i) A beam of electron passes through the specimen to form an image. It provides two dimensional image.
(ii) The magnification is 1-3 lakhs times and resolving power is 2 - 10 Å.

1. Genetic stability - Daughter cells are genetically identical to parent cells.
2. Growth - As multicellular organisms grow, the number of cells making up their tissue increases. The new cells must be identical to the existing ones.
3. Repair of tissues - Damaged cells must be replaced by identical new cells by mitosis.

In pycnoxylic the secondary growth in wood is compact with narrow medullary ray. Eg. Pinus

Because carbohydrates are partially oxidised to organic acid, particularly malic acid without corresponding release of CO₂ but O₂ is consumed. Hence the RQ value will be zero.
\(\underset { Glucose }{ 2{ C }_{ 6 }{ H }_{ 12 }{ O }_{ 6 }+3{ O }_{ 2 }\rightarrow } \underset { malic\quad acid }{ 3{ C }_{ 4 }{ H }_{ 6 }{ O }_{ 5 }+3{ H }_{ 2 }O+Energy } \)
RQ of glucose in succulents = \(\frac { Zero \ molecule \ of \ { CO }_{ 2 } }{ 3 \ molecules \ of \ { CO }_{ 2 } } \) = 0 (Zero)

(i) Nitrogen fixation process requires Nitrogenase enzyme complex, Minerals (Mo, Fe and S), anaerobic condition, ATP, electron and glucose 6 phosphate as H⁺ donor.
(ii) Nitrogenase enzyme is active only in anaerobic condition.
(iii) To create this anaerobic condition a pigment known as leghaemoglobin is synthesized in the nodules which acts as oxygen scavenger and removes the oxygen.

High concentration of salt in the soil leads to high osmotic potential, which may a result in wilting of plants due to following reasons.
(a) This may be due to osmotic withdrawal of water from a cell or system when it is placed in a hypertonic solution called Exosmosis.
(b) Exosmosis in a plant cell leads to plasmolysis. As a result of water loss in the cell protoplasm shrinks and the cell membrane is pulled away from the cell wall and finally the cell becomes flaccid.

S.No	Criteria	Monera
1.	Cell type	Prokaryotic
2.	Level of organization	Mostly unicellular, rarely Multicellular
3.	Cell wall	Present (made up of peptidoglycan and mucopeptides)
4.	Nutrition	Autotrophic (Phototrophic, Chemoautotrophic) Heterotrophic (Parasitic and Saprophytic)
5.	Motility	Motile or non-motile
6.	Organisms	Archaebacteria, Eubacteria, Cyanobacteria, Actinomycetes and Mycoplasma

Yes. The antheridia produce biflagellate antherozoids which swim in thin film of water and reach the archegonium and fuse with the egg to form diploid Zygote. Hence they need water for completing their life cycle.

Pinnately reticulate venation (unicostate) Palmately reticulate venation (multicostate) (i) In this type of venation there is only one midrib in the centre which forms many lateral branches to form a network.
(ii) Eg: Mangifera indica (i) In this type of venation there are two or more principal veins arising from a single point & they proceed outwards or upwards. (ii) Eg: Cucurbita, bay leaf Pinnately parallel venation (unicostate) Palmately parallel venation (multicostate) (i) When there is a prominent midrib in the center,
from which arise many veins perpendicularly
and run parallel to each other.
(ii) Eg: Musa, Ginger (i) In this type several veins arise from the tip
of the petiole and they all run parallel to each other and
unite at the apex.
(ii) Eg: Fan palm, Rice