Late blight of potato is caused by
Ustilago
Pseudomonas
Phytophthora infestans
Colletotrichum falcatum
Most accepted theory for ascent of sap is
capillarity theory
root pressure theory
pulsation theory
transpiration pull theory
Male Anopheles does not transmit malarial parasite because
it catches fever
it is too small to carry parasite
the parasite is killed in its stomach
it does not drink blood
The trisomy for 21st chromosome is called
Down's syndrome
Turner's syndrome
Sickle cell anaemia
Klinefelter's syndrome
A.
Down's syndrome
Trisomy of 21st chromosome is known as Down's syndrome.
Turner's syndrome is the non- disjunction of sex chromosome, that is, 2n = 45.
Klinefelter's syndrome is the presence of one extra chromosome, that is, 2n = 47.
Sickle cell anaemia is a disease in which RBCs are sickle in shape. It is a molecular gene mutation of gene HbA.