(i) Goblet cells are located in the intestinal mucosal epithelium and secrete mucus.
(ii) Fats are broken down into di and monoglycerides with the help of lipases.

(i) Rudolf Virchow (1855) first explained that the cells divide and new cells are formed from the pre-existing cells.
(ii) Schleiden and Schwann observed the cells and cell membranes for the first time. They proposed that animal and plant cells are composed of cells and products of cells.

Myasthenia gravis affected the skeletal musles of the body.
It is a chronic autoimmune neuromuscular disease characterised by varying degree of weakness in the skeletal muscles.

Atherosclerosis affects the vessels that supply blood to the heart muscle. It is caused by the deposits of calcium, fat, cholesterol and fibrous tissues, which make the lumen of arteries narrower.

Bile is a yellowish green alkaline solution with 89-98% water, it has no digestive enzymes.the bile released into the duodenum contains bile pigments(bilirubin and biliverdin), bile salts, cholesterol and phospholipids, but no enzymes.Bile helps in emulsification of fats, i.e breaking down of the fats into very small micelles.Bile also activates lipases.

Absolute growth rate \(=\frac { (19-5) }{ 7 } =2cm/day\)
Relative growth rate \(=\frac { (19-5) }{ 7*5 } =0.4cm/day\)

If a person is feeling dizzy, glucose or fruit juice is given immediately because, it is readily oxidised and oxidation of 1 g of glucose yields more energy than a cheese sandwich.

Plants need sunlight for photosynthesis . The sun is the only thing that will help plants make their own food. If there is a small opening in the room that let in sunlight however, the plant would grow towards the opening or the light to carry out photosynthesis and will survive.

Mycorrhiza is a symbiotic association between roots of higher plants, i.e., conifers and fungi. Fungi being heterotrophic in their mode of nutrition depend upon higher plants for food requirements, whereas in turn provide water and mineral nutrients to the algae.

Semipermeable membrane Animal bladder, parchment paper and egg membrane
Selectively permeable Plasmalemma and tonoplast

The number of chromosomes during metaphase will be 32. Also the DNA content during anaphase will be same as in the parent cell.

There are four substituent groups occupying the four valency positions in an amino acid. These are hydrogen, carboxyl group, amino group and a variable group designated a R group. The R group in amino acid glycine is a hydrogen and a methyl group in case of amino acid alanine, etc.

The body of a multicellular organism has cell as a basic structural unit. The cells are organised to form tissues such as blood, bone, etc. The tissue are organised to form organs such as heart, kidney, etc. The organs are then organised to form organ systems such as digestive system, reproductive system respiratory system, etc. The various organ system of organism gets arranged to form a complete individual.

The anal styles are present in males. These are absent in female cockroach.

(i) Hepatic caeca is a ring of 6-8 blind tubules found at the junction of foregut and midgut.
(ii) It secrets digestive enzymes.

Dicot leaves have parallel venation e.g. Corymbium,Calophyllum,Eryngium Monocot leaves have reticulate venation e.g Smilax,Colocasia,Dioscorea.

(i) Stilt roots of maize/sugar cane.
(ii) Prop roots of banyan.

Dinoflagellates are unicellular, motile, photosynthetic protists. They have a well defined nucleus and possess two different flagella one transverse and the other is longitudinal. They belong to kingdom-Protista.

Some cyanobacteria or blue-green algae like Nostoc and Oscillatoria can tolerate adverse conditions including pollutants very well, as compared to other aquatic plants. This is due to the presence of mucilage covering, resistant proteins and the absence of sap vacuoles. They  release large quantity of spores, which are dispersed by air.

The two kingdom system is divided into Plantae and Animalia solely on the basis of their gross morphology. On the other hand, the five-kingdom classification is based upon more specific characters like cell structure, body structure, nutrition, evolutionary relationships, etc.

The number and kinds of organisms are never constant at a place, as development and reproduction keep the number changing. This is influenced by season and availability of resources, e.g., number of mosquitoes is very large in warm and humid weather, whereas in extreme summer or winter, they can be seen rarely.

No, this is not growth, as increase in size of ball of snow is just because of the addition of similar material externally.
In living organisms, growth is due to increase in body material from inside.

A - 4, B - 3, C - 2, D - 1