Number of σ and π bonds present in ethylene molecule is respectively :

The correct option is 5 and 1.

To determine the number of $\sigma$ (sigma) and $\pi$ (pi) bonds in an ethylene molecule ($C_2{H}_4$), let us look at its chemical structure and bonding:

1. Structure of Ethylene:
Ethylene consists of two carbon atoms double-bonded to each other, with each carbon atom also bonded to two hydrogen atoms. Its structural formula is represented as:
$H_{2}C=C{H}_2$

2. Types of Covalent Bonds:
- Every single covalent bond is a $\sigma$ (sigma) bond.
- A double covalent bond consists of one $\sigma$ (sigma) bond and one $\pi$ (pi) bond.

3. Counting the Bonds in Ethylene:
- There are four carbon-hydrogen single bonds ($C-H$), which contribute four $\sigma$ bonds.
- There is one carbon-carbon double bond ($C=C$), which contributes one $\sigma$ bond and one $\pi$ bond.

4. Total Count:
- Total $\sigma$ bonds = 4 (from $C-H$) + 1 (from $C-C$) = 5 bonds.
- Total $\pi$ bonds = 1 bond (from $C=C$).

Therefore, the number of $\sigma$ and $\pi$ bonds present in the ethylene molecule is respectively 5 and 1.