During embryo germination in a grass family an absorptive organ that forms interface between the embryo and the starchy endosperm tissue is called (1) Coleorhiza (2) Coleoptile (3) Scutellum (4) […]
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CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Early Plant Developmental Stages: Meiosis, Mitosis, and Gamete Formation
17. A few statements on early developmental stages in plants are given below: A. The cells of flower are diploid in nature. B. Only some specialized cells in reproductive organs […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Stages of Pollen Development in Angiosperms: From Archespore to Mature Gametophyte
The development of anthers and male gametophytes is highly conserved among angiosperms. Following are some of the events associated with pollen development, in random order. (a) Microsporogenesis in pollen sac […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Megasporogenesis and Female Gametophyte Development in Angiosperms: Clarifying Common Misconceptions
Which of the following statement is WRONG? (1) Megasporocyte develops within the megasporangium of the ovule (2) Megasporocyte undergoes meiosis to produce four haploid megaspores (3) All the four megaspore […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Double Fertilization in Plants: Fusion of Sperm with Egg and Central Cell Explained
Which one of the following statements regarding double fertilization in plants is correct? (1) The same sperm cell fuses with both egg cell and central cell. (2) Two sperm cells […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Sperm Cell Behavior in Arabidopsis Double Fertilization: Correcting Misconceptions About Antipodal Cells
Sperm cell behaviour during double fertilization in Arabidopsis can be stated as follows. Identify the INCORRECT statement: (1) Pollen tube bursts and discharges sperm cells. (2) Pollen cells produce pollen […]
CSIR NET Life Science Previous Year Questions and Solution on Development Biology
Induction and Competence in Lens Formation: The Sequential Role of Anterior Neural Plate and Optic Vesicle
Lens formation requires sequential events whereby the anterior neural plate signals the anterior ectoderm to promote secretion of Pax 6, which renders the anterior ectoderm more receptive to secretions from […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Plant Reproductive Development: Roles of Vegetative Cells, Synergids, and Gamete Formation
During reproductive development in plants: (A) male and female gametes are produced as a result of two mitotic divisions after meiosis (B) vegetative cells in pollen contribute to pollen development […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
Double Fertilization in Angiosperms: Fusion of Sperm with Egg and Central Cell
During double fertilization in plants, one sperm fuses with the egg cell and the other sperm fuses with (1) synergid cell (2) central cell (3) antipodal cell (4) nucellar cell […]
CSIR NET Life Science Previous Year Questions and Solution on Basic Concepts of Development
WUSCHEL Gene: Master Regulator of Shoot Meristem Formation in Arabidopsis
10. In Arabidoposis gene responsible for formation shoot meristem is (1) Leafy (2) Agamous (3) Clavata (4) Wus Introduction Shoot meristem formation is critical for plant growth and organogenesis. […]
