Describe the components of the male reproductive system and the roles played by the reproductive tract and accessory glands in producing spermatozoa; specify the composition of semen; and summarize the hormonal mechanism that regulate male reproductive functions. The main topic is the male reproductive system but the main focus is […]

Q. A greenhouse experimentation to test growth rates in tomato cultivars was conducted using sterile soil mix and watering with sterile solutions of water and fertilizer. Following germination, half of the plants in each group were transplanted into soil that was obtained from a nearby agricultural field (nonsterile), other half […]

Q1- Outermost layer, thin elastic, diminishes as cell membrane composed of cellulose, hemicelluloses & pectin. (a)    Primary wall (b)   Secondary wall (c)    Tertiary wall (d)   None Q2-Middle lamella consists of – (a)    Ca (b)   Mg (c)    K (d)   Two of the above Q3- who discovered cell-coat? (a)    Karl Landerstein (b)   […]

1. Which group of algae appears to be the most closely related to the ancestors of true plants? Name one feature that appears to be homologous. 2. What are microphylls and which group of seedless vascular plants are they found? 3. What is the difference between simple cones and compound […]