Apomictic embryos in Citrus arise from 

• Synergids

• maternal sporophytic tissue in ovule

• antipodal 

• antipodal 

Select the correct statement from the ones given below

• Barbiturates, when given to criminals, make them tell the truth

• Morphine is often given to person who has undergone surgery as a pain killer

• Chewing tobacco lowers blood pressure and heart rate

• Chewing tobacco lowers blood pressure and heart rate

The genotype of plant showing the dominant phenotype can be determined by 

• test cross

• dihybrid cross

• pedigree analysis

• pedigree analysis

Ringworm in humans is caused by 

• Bacteria 

• fungi 

• nematodes

• nematodes

Vasa efferentia are the ductules leading from

• testicular lobules to rete testis

• rete testis to vas deferens

• vas deferens to epididymis

• vas deferens to epididymis

Seminal plasma in human males is rich in 

• fructose and calcium

• glucose and calcium

• DNA and testosterone

• DNA and testosterone

Study the four statements (1-4) given below and select the two correct one out of them.

1. A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
2.Predator starfish pisaster helps in maintaining species diversity of some invertebrates
3.Predators ultimately lead to the extinction of prey species
4.Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders

The two correct statements are 

• (2) and (3)

• (3) and (4)

• (1) and (4)

• (1) and (4)

Keel  is characteristic of the flowers of 

• gulmohur

• cassia

• Calatropis

• Calatropis

Select the correct statement from the following

• Bio-gas is produced by the activity of aerobic bacteria on animal waste

• Methanobacterium is an aerobic bacterium found in rumen of cattle

• Biogas, commonly called gobar gas, is pure methane

• Biogas, commonly called gobar gas, is pure methane

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

• xenogamy

• geitonogamy

• karyogamy

• karyogamy