1: Gradual growth through a series of progressive changes is called
(A) Growth (B) Development
(C) Cleavage (D) Transduction
2: The study of developmental changes is known as
(A) Embryology (B) Developmental biology
(C) Both A and B (D) Chrono-biology
3: As a fertilized egg develops into an embryo, it undergoes
(A) One meiotic cell division, only (B) Many meiotic cell divisions
(C) One mitotic cell division, only (D) Many mitotic cell divisions
4: Undifferentiated tissue from which new cells are formed, as at the tip of a stem or root.
(A) Meristele (B) Merithallus
(C) Meristem (D) All a, b and c
5: Primary growth depends upon activity of
(A) Apical meristem (B) Secondary meristem
(C) Lateral meristem (D) Vascular cambium
6: Secondary growth is made possible by the _____________ which increases the girth of plant.
(A) Primary meristem (B) Apical meristem
(C) Lateral meristem (D) None of the above
7: In ________ plants whole body is capable of growth.
(A) Angiosperms (B) Gymnosperms
(C) Bryophyta (D) All of these.
8: The correct sequence of growth phases in plants is
(A) Elongation-Formative-Maturation (B) Maturation-Elongation-Formative
(C) Formative-Maturation-Elongation (D) Formative-Elongation-Maturation
9: During elongation phase the cells become enlarged due to
(A) Transpiration pressure (B) Plasmolytic pressure
(C) Turgor pressure (D) Both B and C
10: During which phase the elongated cells are modified into permanent cells.
(A) Formative phase (B) Elongation phase
(C) Both A and B (D) Maturation phase