RBCs are nucleated in
- man
- rat
- frog
- rabbit
The Correct Option is C
Approach Solution - 1
Approach Solution -2
Ans: Red Blood Cells are the most common type of blood cells with 5.2 million. The features of RBC are as follows:
- They are anucleated.
- They are biconcave and discoidal in shape.
- The life span of RBC is 120 days. After that they are recycled by the macrophages.
- The membrane of RBC is made of protein and lipids.
- Haemoglobin is present that can bind to oxygen.
- RBC can also absorb carbon dioxide, and transport it to the lungs.
The RBC are anucleated, so that more space can be given to carry the oxygen efficiently. There will be more room for haemoglobin and the proteins that are responsible for transporting oxygen. But nucleated RBCare found in camels and amphibians. Their cytoplasm is filled with faint straw colour and have a round nucleus in the centre.
Top Questions on Blood
- What is the approximate size range of lymphocytes, a type of white blood cell?
- Arrange the affinity of hemoglobin (Hb) towards \( \mathrm{CO} \), \( \mathrm{CO_2} \), and \( \mathrm{O_2} \) in increasing order.
- Identify the incorrect statements.
(A) Gametocytes of Plasmodium develop in the RBCs.
(B) Ascariasis pathogens are transmitted to a healthy person through the bite by female mosquito vectors.
(C) Entamoeba histolytica is a helminth parasite in the small intestine of humans, causing amoebiasis.
(D) Malarial parasite reproduces asexually in the gut of the mosquito.
(E) Filarial worms reside in the lymphatic vessels of the lower limbs.
Choose the correct answer from the options given below - As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $ I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below : - When one of the parents has ‘A’ blood group and the other parent has ‘O’ blood group, then their child can have _______ blood group.
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Concepts Used:
Blood
Blood is a fluid-like structure that is responsible for transporting oxygen and other nutrients to all the cells of the body. Blood shows characteristics of both tissues and fluid.
Composition of Blood:
Blood is composed of the below-mentioned parts:
- Plasma
- Blood Cells
- Platelets
Types of Blood Cells:
The two types of blood cells present in the body are:
RBC (Red Blood Cells)
RBC’s are also known as Erythrocytes. They are biconcave and are present without a nucleus in human beings. It contain Haemoglobin which is an iron-rich protein due to which the color of blood is red. RBC’s are produced in the bone marrow which is mainly responsible for the transportation of oxygen to and from various tissues and organs present in the human body.
WBC (White Blood Cells)
WBC’s are also known as Leucocytes which are colourless blood cells due to the absence of haemoglobin. They are further divided into two categories such as granulocytes and agranulocytes. Their main responsibility is to provide immunity and maintain defence mechanisms in the human body.