Potato which we eat is an underground part of a plant, however it can not be considered as root. Justify the given statement.

Answer the following: Nephrolepis plants have a primitive conducting system. However they can not be considered as phanerogams. Give reason.

A metal plate is getting heated. It can be because Which is the wrong option from the above given statements?

Each plant or group of plants has some phylogenetic significance in relation to evolution: Cycas, one of the few living members of gymnosperms is called as the relic of past. Can you establish a phlogenetc relationship of Cycas with any other group of plants that justifies the above statement?

Rhizome of ginger is like the roots of other plants that grows underground despite this fact ginger is a stem and not a root. Justify.

Justify the following statements on the basis of external features. Underground parts of a plant are not always roots

Question based on paragraph Students were taken to observe the crop cultivation in a potato farm in Maharashtra. The students observed that the yield of crops in Mr. Shyam's potato farm was more than that in his neighbour Bharat’s potato farm. Mr. Shyam was using a different variety of the crop, which he suggests has been disease-free ever since he planted the seeds. Based on the above passage, answer the given question Do you know any superior variety of potato?

Diseases in humans can be prevented by administration of vaccines. Vaccines contain inactivated, killed / weakened pathogens that can be used as antigens to provide either permanent or temporary immunity against a specific pathogen or disease. Conventional methods of vaccine preparation include the use of completely or partially killed pathogens. These vaccines however posed a risk of causing disease in case of some persons. Biotechnological techniques provide alternative antigenic genes isolated in the laboratory that can be used to make pure forms of proteins that can be used as antigens to activate the immune system. Recent developments in this field include production of edible vaccines like transgenic potatoes. Consumption of raw potatoes is speculated to develop immunity against the pathogen. These edible vaccines are produced by inserting genes isolated from specific pathogens to produce the antigen in the plants. Based on the given paragraph answer the following questions. What is the disadvantage of transgenic potatoes containing edible vaccines?

Question based on paragraph Students were taken to observe the crop cultivation in a potato farm in Maharashtra. The students observed that the yield of crops in Mr. Shyam's potato farm was more than that in his neighbour Bharat’s potato farm. Mr. Shyam was using a different variety of the crop, which he suggests has been disease-free ever since he planted the seeds. Based on the above passage, answer the given question Are there any adverse effects of using such crops? Mention one.

Question based on paragraph Students were taken to observe the crop cultivation in a potato farm in Maharashtra. The students observed that the yield of crops in Mr. Shyam's potato farm was more than that in his neighbour Bharat’s potato farm. Mr. Shyam was using a different variety of the crop, which he suggests has been disease-free ever since he planted the seeds. Based on the above passage, answer the given question Mention two techniques used for the production of such superior varieties of crops.

Question based on paragraph Students were taken to observe the crop cultivation in a potato farm in Maharashtra. The students observed that the yield of crops in Mr. Shyam's potato farm was more than that in his neighbour Bharat’s potato farm. Mr. Shyam was using a different variety of the crop, which he suggests has been disease-free ever since he planted the seeds. Based on the above passage, answer the given question What type of crop do you think Mr. Shyam must be using?