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The x-axis shows the temperature and the y-axis shows the killing time. This is with respect to spores in a suspension. Curve a = 100,000 spores/ml and b= 1,000 spores/ml. Above curve a is the region of spores killed and below the region b is the region of spores survived. Which of the following do we comprehend from the above?
Consider the following statements and choose the correct answer:
1. Spores of pine are borne in cones
2. In pine, the sporophyte is the smaller generation and after germination is dependent
3. In pine, there are two kinds of spores - microspores and megaspores
4. The male gametophyte of pine is a dependent structure and is reduced to six cells
In alternation of generation in plants, a sporophyte alternates with a gametophyte or vice- versa. Which of the following statements is INCORRECT for a sporophyte? 
Two statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All cocks are bears. All bears are horses. Conclusions: I. Some bears are cocks. II. Some horses are cocks. III. All cocks are horses.
In the following question below are given some statements followed by some conclusions. Assuming the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusions logically follows the given statements. Statements: I. All cats are dogs. II. All dogs are bears. Conclusions: I. Some bears are cats. II. All bears are cats.
Development of gametophyte directly from the vegetative cells of the sporophyte without the formation of spores is known as:
Statement 1: Spores heated in soil directly are more heat resistant than ones which are mixed with sterile soils and then heated. Statement 2: Thermophilic bacteria which form spores in artificial media are more heat resistant than those formed on machinery in canning plants.
The spores which are produced typically by the binucleate mycelium and mainly function as repeating spores for the spread of rust disease in wheat is called
Consider the following statements regarding the symptoms of loose smut of wheat and choose the correct answer:
1. The smutted ears from the boot leaves a little earlier than the healthy ones
2. All the ovaries and other floral parts including the awns and rachics are converted into masses of smut spores
3. The spores of each spikelet are covered by a thin greyish or silvery membrane
4. The ear is generally completely destroyed
Is evidence bears out, the evidence of the first witness. Here 'bears out' means-