Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Ruhul Amin Alig
Match the crops given in column-I with their resistance to disease given in column-II and choose the correct option. Column-1(Crop) ; Column-II (Resistance to diseases) A. Wheat I. Tobacco mosaic virus and leaf curl B. Brassica II. Bacterial blight C. Cowpea III. Leaf and stripe rust D. Cauliflower IV. White rust E. Chilli V. Black rot and curl blight black rot
Ruhul Amin Alig
Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Ruhul Amin Alig
Q1: Which one of the following is a freshwater fish? (a) Catla (b) Rohu (c) Common carp (d) All of these. Q2:Which one of the following is/are marine fish? (a) Rohu (b) Hilsa (c) Mackerel (d) Both (b) and (c)
Ruhul Amin Alig
Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Ruhul Amin Alig
Consider the following four statements (i – iv) and select the option which includes all the correct ones only. (i) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins, etc. (ii) Body weight-wise, the micro-organism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day. (iii) Common button mushrooms are a very rich source of vitamin C. (iv) A rice variety has been developed which is very rich in calcium.
Ruhul Amin Alig
Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Ruhul Amin Alig
Which one of the following shows maximum genetic diversity in India ? 1. Mango 2. Groundnut 3. Rice 4. Maize
Ruhul Amin Alig
Class 12 | Biology | chapter 9 | Strategies For Enhancement in Food Production
Ruhul Amin Alig
In crop improvement programme, haploids are important because they (a) require one half of nutrients. (b) are helpful in study of meiosis. (c) grow better under adverse conditions. (d) form perfect homozygous.
Ruhul Amin Alig