NEET UG – 2018 (Biology)

Oxygen is not produced during photosynthesis by

Double fertilization is

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

Pollen grains can be stored for several years in liquid nitrogen having a temperature of

Which of the following elements is responsible for maintaining turgor in cells?

What is the role of NAD⁺ in cellular respiration?

In which of the following forms is iron absorbed by plants?

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

The correct order of steps in Polymerase Chain Reaction (PCR) is

Select the correct match

A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to

Which of the following pairs is wrongly matched?

Select the correct statement

The experimental proof for semiconservative replication of DNA was first shown in a

Which of the following flowers only once in its life-time?

Offsets are produced by

Select the correct match

Which of the following has proved helpful in preserving pollen as fossils?

Natality refers to

World Ozone Day is celebrated on

Which of the following is a secondary pollutant?

Niche is

What type of ecological pyramid would be obtained with the following data?

• Secondary consumer : 120 g
• Primary consumer : 60 g
• Primary producer : 10 g

In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?

The two functional groups characteristic of sugars are

Which among the following is not a prokaryote?

The Golgi complex participates in

Which of the following is not a product of light reaction of photosynthesis?

Which of the following is true for nucleolus?

Stomatal movement is not affected by

The stage during which separation of the paired homologous chromosomes begins is

Stomata in grass leaf are

Secondary xylem and phloem in dicot stem are produced by

Pneumatophores occur in

Casparian strips occur in

Plants having little or no secondary growth are

Sweet potato is a modified

Which of the following statements is correct?

Select the wrong statement :

After karyogamy followed by meiosis, spores are produced exogenously in

Winged pollen grains are present in

Which one is wrongly matched?

Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?

The transparent lens in the human eye is held in its place by

Which of the following is an amino acid derived hormone?

Which of the following hormones can play a significant role in osteoporosis?

Which of the following structures or regions is incorrectly paired with its functions?

The amnion of mammalian embryo is derived from

Hormones secreted by the placenta to maintain pregnancy are

The difference between spermiogenesis and spermiation is

The contraceptive ‘SAHELI’

Ciliates differ from all other protozoans in

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system

Which of the following features is used to identify a male cockroach from a female cockroach?

Which one of these animals is not a homeotherm?

Which of the following animals does not undergo metamorphosis?

Which of the following organisms are known as chief producers in the oceans?

Which one of the following population interactions is widely used in medical science for the production of antibiotics?

All of the following are included in ‘ex-situ conservation’ except

In a growing population of a country,

Which part of poppy plant is used to obtain the drug “Smack”?

All of the following are part of an operon except

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

According to Hugo de Vries, the mechanism of evolution is

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

Which of the following gastric cells indirectly help in erythropoiesis?

Which of the following is an occupational respiratory disorder?

Calcium is important in skeletal muscle contraction because it

Nissl bodies are mainly composed of

Which of these statements is incorrect?

Select the incorrect match :

Which of the following terms describe human dentition?

Which of the following events does not occur in rough endoplasmic reticulum?

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?

Which of the following is not an autoimmune disease?

Among the following sets of examples for divergent evolution, select the incorrect option :

Conversion of milk to curd improves its nutritional value by increasing the amount of

The similarity of bone structure in the forelimbs of many vertebrates is an example of

Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?

1. Dominance
2. Co-dominance
3. Multiple allele
4. Incomplete dominance
5. Polygenic inheritance