Protease is added because it helps in digesting proteins and helps in the breakdown of cell wall by dissolving it.

The correct order of the reproductive events is Gametogenesis, pollination, fertilisation, embryogenesis.

Two ways of measuring the standing crop of a trophic level are:
(i) Biomass of living organisms
(ii) The number in a unit area.

Stratification is the way in which different species in an ecosystem are placed or arranged vertically, occupying different levels.It is a way of minimising competition for limited resources vital for survival.

i) The organism exhibiting external fertilization discharge a large number of gametes into the water to increase the chances of fertilization.
ii)In Marchantia, male and female reproductive organs are present in separate individuals.Such type of plants is called dioecious plants.

A-Continuous synthesis,
B-Discontinuous synthesis

Distillation increases the alcohol content in alcoholic drinks.

It is the mass of parenchymatous tissue surrounded by integuments in an ovule. It encloses embryo sac and provides nourishment to the developing embryo

High altitude sickness is the disorder which a plain dweller surfaces when he/she goes to a high altitude area like Andes and Himalayas. It is characterized by nausea, fatigue, heart palpitation, etc.

The suspended stage of development by an organism inorder to overcome the unfavourable environment conditions is called diapause.
Significance. Passing unfavourable conditions without any harm to the organism.

a) 5'-TTACGTCGATAATCC-3'
B) 3'-AAUGCAGCUAUAGG-5'

(i) The DNA polymerase catalyses the addition of nucleotides, i.e. polymerization of nucleotides to form a DNA strand in the 5' -3' direction only
(ii) In prokaryotes, It removes any wrong base added to the DNA strand being synthesised.

Yes .Reproductive health is a state of physical, physiological, behavioural and social fitness for leading a responsible, safe and satisfying reproductive life.

Hepatitis-B vaccine.

It may not grow well because of chage in its microlimate.

Symbiosis.

Meristems have cells which have the capacity to divide,whereas in permanent capacity to divide, whereas in permanent tissues, the cells have lost the property of divition; some cells will have to undergo de-differentiation to produce new plants.

The protein produced by microbes, is called single cell protein.

A diploid individual has only two sets of homologous chromosomes; hence only two alleles of a gene can be present on the homologous pair of chromosomes.

- It is called a test cross.

- It helps to determine the genotype of the F₁ individual with dominant phenotype.

Ampullary-isthmic junction is the site in the fallopian tube where fertilisation occurs.

LH surge (maximum level of luteinizing hormone) leads to ovulation,i.e. the rupture of mature Graafian follicle and the consequent release of ovum.

Tumour inducing (Ti) plasmid of Agrobacterium tumefaciens is modified into a cloning vector by removing/ altering the gene responsible for its pathogenic property.