Biology GK · all questions

Plant Anatomy and Physiology
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Q841

The upper part of the ocean, into which enough light can penetrate to be effective in photosynthesis, is known as the

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Q842

In holoenzyme, the prosthetic group may be a metal ion associated with protein molecule which is known as

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Q843

Most of the halophytes produce special type of branched, negatively geotropic roots that come out of the mud surface to encourage the entry of oxygen gas, which are known as

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Q844

Which of the following enzymes catalyze the addition of water across a specific bond of the substrate?

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Q845

The enzymes catalysing the last two steps of fermentation are

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Q846

Each member of a population produced from a single individual is called

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Q847

Which of the following is known as 'vegetative fertilisation'?

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Q848

The process of double fertilization was demonstrated for the first time by

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Q849

If the wheat plants have received a systemic infection at the early stages of growth, the disease assumes a severe form called the

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Q850

Agrimycin is a mixture of

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Q851

According to Cajlachjan's measurements of the gibberellin levels in leaves, the gibberellin content is

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Q852

Chlorophyll-e is found in which of the following genera ?

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Q853

Symptoms of black rust on grain host show elongated pustules or streaks appearing chiefly on the stem and leaf bases, leaf sheaths and even on the gIumes which are called

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Q854

Plants which grow best in sun, but can grow fairly well under shade are known as

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Q855

Which of these is the energy conversion that happens in the process called photosynthesis?

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Q856

Which of the following is not the work of roots?

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Q857

Consider the following statements and choose the correct answer:
1. The rate of respiration is directly proportional to the oxygen concentration in plants
2. Van't Hoff's coefficient is generally five (Q₁₀=5)
3. Generally in case of injured plant tissues the rate of respiration is increased for the time being
4. The rate of respiration is directly proportional to the respiratory substrate present in the tissues

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Q858

The transformation of cauliflower leaf into a eylindrical structure, called 'Whiptail' is found to be due to deficiency of

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Q859

Circinotropous ovule is found in case of

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Q860

Tiny pores present on the surface of leaves are known as

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