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)
D.
(1) and (4)
Both lion (carnivore) and sparrow (herbivore) and consumers. The Asteroidea occupy several important roles throughout ecology and biology. Sea stars, such as Ochre star (Pisaster ochraceous) have become widely known as the example of the keystone species concept in ecology. Most species are generalist predators, eating molluscs such as clams, oysters, etc.
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
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
The genotype of plant showing the dominant phenotype can be determined by
test cross
dihybrid cross
pedigree analysis
pedigree analysis
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
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called
xenogamy
geitonogamy
karyogamy
karyogamy
Seminal plasma in human males is rich in
fructose and calcium
glucose and calcium
DNA and testosterone
DNA and testosterone
Apomictic embryos in Citrus arise from
Synergids
maternal sporophytic tissue in ovule
antipodal
antipodal
