The scientist who introduced binomial nomenclature in the classification of organisms was
Swedish naturalist, Carolus Linnaeus, was the man behind the present day classification of plants and animals.
Which of the following statements is true about arthropods?
The prothorax contains the first pair of legs in the arthropods. It's the first of the three segments of the thorax.
What level of organisation is Spirogyra?
Unicellular organisms like the Amoeba, Spirogyra etc fall in the cellular level of organisation.
The streaming movement of cytoplasm within the Paramecium is known as
Cyclosis is also called Cytoplasmic streaming. It is defined as the streaming rotary motion of the protoplasm within certain cells and unicellular organisms. Paramecium is an example of a unicellular organism.
Which of the following organelles is found only in plant cells?
Plastids are found only in plants and algae. One common type of plastid is the chloroplast.
Active transport differs from diffusion in that active transport
Diffusion, as well as osmosis depends only on concentration gradient but active transport works against concentration gradient.
The diagrams above are illustrations of an experimental set-up to demonstrate a type of tropic response in plants. The type of response demonstrated is
From the first diagram, you notice the roots of the plants bending towards the porous water pot, hence this is a form of response in the direction of the stimuli of the water. This is a form of hydrotropism.
The conclusion drawn from the experiment in the diagram above is that
The roots of the plants in diagram 1 bend towards the porous clay pot while growing and the well watered soil sees the plants growing straight and erect. The roots of the plants are positively hydrotropic (respond towards the pull of water positively).
The odontoid process is found on the
The odontoid process is a projection of the axis vetebra. It is seen at its point of joining with the body.
A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was