Pick out the alkaloid among the following
Morphine
Curcumin
Cellulose
Ricin
Ricin
A.
Morphine
Morphine was the first alkaloid to be extracted from opium.
Which of the following statements about transgenic animals is/are false?
(i) Transgenic animals are designed to study how genes are regulated.
(ii) They are specially made to serve as models for human diseases.
(iii) Transgenic Cow, Rosie was created to produce the human protein a-1-antitrypsin.
(iv) Transgenic mice are used to test the safety of vaccines.
(iii) only
(i) and (iii) only
(ii) only
(ii) and (iii) only
(ii) and (iii) only
Consider the following statements with respect to pollen grains
(a) The exine is a thin and continuous layer made up of cellulose and pectin
(b) The hard outer layer called the exine is made up of sporopollenin
(c) Sporopollenin is present ingerm pores
(d) The exine exhibits a fascinating array of patterns and designs
Of the above statements-
(a) and (b) alone are correct
(a) and (c) alone are correct
(b) and (d) alone are correct
(b) and (c) alone are correct
(b) and (c) alone are correct
Lactational amenorrhea means
Medical termination of pregnancy
Oral administration of progestrogen
Coitus interrupts
Intrauterine insemination
Intrauterine insemination
Oogamous type of reproduction is seen in
(i) Fucus
(ii) Anabaena
(iii) Nostoc
(iv) Volvox
(i) only
(i) and (ii) only
(i) and (iii) only
(iii) only
(iii) only
Match the items in Column I with their uses in Column II and choose the right option.
| Column I | Column II |
| A. Bacillus thuringiensis | 1. Restriction endonuclease |
| B. Agrobacterium tumefaciens | 2. Thermostable DNA polymerase |
| C. Thermus aquaticus | 3. Insecticidal protein |
| D. Escherichia coli | 4. Tiplasmid |
A - 3; B - 4; C - 1; D - 2
A - 2; B - 1; C - 4; D - 3
A - 3; B - 4; C - 1; D - 2
A - 1; B - 4; C - 2; D - 3
A - 1; B - 4; C - 2; D - 3
Monocotyledonous seed consists of one large shield shaped cotyledon called
Coleoptile
Testa
Tegmen
Hilum
Hilum
Match the following and choose the correct combination from the options given
| Column I | Column II |
| A. Yeast | 1. Reproductive by true regenration |
| B. Planaria | 2. Reproduce by budding |
| C. Mules | 3. Multiply by fragmentation |
| D. Protonema | 4. Do not reproduce |
A - 1; B - 2; C - 3; D - 4
A - 4; B - 3; C - 1; D - 4
A - 4; B - 1; C - 2; D - 3
A - 2; B - 1; C - 4; D - 3
A - 2; B - 1; C - 4; D - 3
Foetal ejection reflex in human female induces
The release of hormones from the placenta
The growth and development of ovarian follicles
The release of oxytocin from the maternal pituitary
The release of gonadotropins
The release of gonadotropins
Identify the ecologist from the given hints
(i) Has carried out long-term ecosystem experiments using outdoor plots
(ii) In his experiments he showed that increased diversity contributed to higher productivity
Ahmed Khan
David Tilman
Stanley Choen
Ernest Chain
Ernest Chain
