A homogamous tall pistillate plant (TT) is crossed with homogamous dwarf staminate plant (tt). What is the genotype of endosperm?

(1) TTT                 

(2) TTt                 

(3) Ttt                            

(4) ttt

For artificial hybridisation experiment in bisexual flower, which of the sequences is correct?
(1) Bagging → Emasculation → Cross pollination → Rebagging

(2) Emasculation → Bagging → Cross pollination → Rebagging

(3) Cross pollination → Bagging → Emasculation → Rebagging

(4) Self-pollination → Bagging → Emasculation → Rebagging

Which of the following is false?

(1) I and II only   

(2) III only           

(3) V only             

(4) II only

Diagram given below shows stages in embryogenesis in a typical dicot (Capsella). Identify structures A to D respectively:

1. Suspensor, Radicle, Plumule, Cotyledons
2. Hypophysis, Radicle, Plumule, Cotyledons
3. Suspensor, Plumule, Radicle, Cotyledons
4. Suspensor, Radicule, Plumule, Hypocotyls

Go through the given diagram of a typical dicot embryo. In which of the following all the 3 parts labelled as A, B, C with their respective functions are correctly identified?

Which are the external conditions required for seed germination:
(1) Oxygen, carbon dioxide and suitable temperature

(2) Oxygen, light and suitable temperature

(3) Light, moisture and suitable temperature

(4) Oxygen, moisture and suitable temperature

Which of the following is not correct?
(1) As the seed matures, its water content is reduced and seeds become relatively dry(10-15% moisture by mass)

(2) The seed dormancy is the internal or innate inhibition of generation of normal or viable seeds

(3) Embryo in dormant seed shows higher rate of general metabolic rate

(4) Because of dormancy seeds remain viable for longer period and can be stored

Which of the following will lose its economic value if fruits are produced through parthenocarpy:

(1) Citrus             

(2) Banana           

(3) Grape             

(4) Pomegranate

Which of the following statements is false?
(1) Some 2000 years old viable seeds of Pheonix dactylifera were discovered during archaeological excavation of King Herod's palace near Dead Sea

(2) Record of 10,000 years of dormancy of seeds has been estimated in Lupinus arcticus

(3) The number of seeds in each fruit in case of orchid and some parasitic forms like Orobanche and Striga is one

(4) Many fruits have evolved mechanisms for dispersal of seeds

Hybrid seeds have to be produced every year because:
(1) Hybrid plants become sterile in coming years

(2) They show more heterosis in coming years

(3) Hybrid vigour is not maintained beyond one generation as segregation of genes begins in the second generation

(4) Hybrid seed industry tends to increase cost of the seeds